Explain how lithium-ion batteries use a lattice structure with electrolytes to function.

Answers

Answer 1

Lithium is a particularly reactive metal with a substantially higher storage density than lead batteries. Carbon and lightweight lithium are used to create the electrodes in lithium batteries.

These ions reach the anode during battery recharge. lithium batteries are significantly lighter. Thus, three Li+ ions are equivalent to one Al+3 ion. As a result, the energy storage capacity is increased by three units of charge provided by ions. Rechargeable batteries made of aluminum are inexpensive and have low flammability. Because aluminum is inert, it is safe to use and simple to use in a natural setting. Since aluminum has a higher volumetric capacity than lithium, it can store more energy per unit of volume. An electrochemical cell is one in which a chemical reaction aids in the generation of an electric current. Electricity is used in an electrolytic cell to carry out the chemical reaction that is not spontaneous. While no initiation is required for a spontaneous reaction.

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Related Questions

The bond_____
covalent bond.
is the actual number of bonded pairs of electrons in a

Answers

A covalent bond is the exact number of bonded pairs of electrons in a compound

One electron is added by each atom to a pair of shared electrons in a single bond. While double bonds share only one pair of electrons, triple bonds share three pairs. Bonds with multiple covalent bonds exchange several electron pairs

Covalent bonding happens when atoms share electron pairs. Atoms join together through covalent bonds to form a full electron shell, which boosts stability. By sharing their outermost (valence) electrons, atoms can fill out their outer electron shell and become stable. Nonmetals will swiftly create covalent bonds with other nonmetals in order to achieve stability.

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Given the incomplete equation for the combustion of ethane (C2H6): 2 C2H6 7 O2 --> 4 CO2 6 ___ Group of answer choices

Answers

The correct option is D. H2O.

For the combustion of ethane (C2H6); the chemical equation is;

2 C2H6 + 7 O2 --> 4 CO2 + 6 H2O.

All hydrocarbons go through combustion processes, and the only byproducts are water (H2O) & carbon dioxide (CO2).

What is hydrocarbons?

Any of a group of organic molecules with only the atoms carbon (C) & hydrogen are known as hydrocarbons (H). The hydrogen atoms bind to the carbon atoms in a variety of ways to create the compound's structural framework. chemical mixture.

The classification of hydrocarbons are done by-

It is not necessary for a substance to be classified into a single class; rather, this categorization of hydrocarbons is meant to help in the association of structural traits with properties. In fact, it is typical for molecules to contain structural elements that are unique to two or even more hydrocarbon families. For instance, a molecule with a benzene ring and a carbon-carbon triple bond would have certain features that are typical of alkynes and some that are typical of arenes.Alkenes, alkynes, and aromatics are referred to as unsaturated hydrocarbons, whilst alkanes are regarded as saturated hydrocarbons.

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The complete question is -

Given the incomplete equation for the combustion of ethane (C2H6): 2 C2H6 + 7 O2 --> 4 CO2 + 6 ___

Group of answer choices:

A. H2O2

B. HCOOH

C. CH3OH

D. H2O

__Pb(NO3)2 + __NaCI = __NaNO3 + __PbCI2

Answers

Answer:

Pb(NO3)2 + 2NaCl = 2NaNO3 + PbCl2

What product is used in a pedicure bath to cleanse and soften the skin? a foot masque a foot soak massage oil cuticle remover submitnext

Answers

The product which is used in a pedicure bath to cleanse and soften the skin is foot soak

What is skin pedicure?

Skin pedicure is a special and cosmetic treatment of the body's skin including the feet and toenails, analogous to a manicure.

So therefore, the product which is used in a pedicure bath to cleanse and soften the skin is foot soak

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You can use mass percent composition as a conversion factor between grams of a constituent element and grams of the compound. Write the conversion factor (including units) inherent in each mass percent composition. (a) Water is 11.19% hydrogen by mass. (b) Fructose, also known as fruit sugar, is

Answers

You can use mass percent composition as a conversion factor between grams of a constituent element and grams of the compound. The conversion factor in each mass percent composition are (a) 11.19 g H‚ 100 g H₂O (b) 53.29 g O‚100 g fructose (c) 84.12 g C‚100 g octane (d) 52.14 g C‚100 g ethanol

What is the Mass Percent ?

The percent by mass of each element present in a compound is called Mass Percent.

(a) Water is 11.19% hydrogen by mass.

Here it is given mass of hydrogen is 11.19 %. That means 11.19 % of solute should be added in 100 g H₂O.

(b) Fructose, also known as fruit sugar, is 53.29% oxygen by mass.

Here it is given mass of oxygen is 53.29 %. That means in 53.29% of solute should be added in 100 g fructose.

(c) Octane, a component of gasoline, is 84.12% carbon by mass.

Here it is given mass of carbon is 84.12 %. That means in 84.29% of solute should be added in 100 g Octane.

(d) Ethanol, the alcohol in alcoholic beverages, is 52.14% carbon by mass.

Here it is given mass of carbon is 52.14 %. That means in 52.14% of solute should be added in 100 g Ethanol.

Thus from the above conclusion we can say that You can use mass percent composition as a conversion factor between grams of a constituent element and grams of the compound. The conversion factor in each mass percent composition are (a) 11.19 g H‚100 g H2O (b) 53.29 g O‚100 g fructose (c) 84.12 g C‚100 g octane (d) 52.14 g C‚100 g ethanol

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Question: You can use mass percent composition as a conversion factor between grams of a constituent element and grams of the compound. Write the conversion factor (including units) inherent in each mass percent composition.

(a) Water is 11.19% hydrogen by mass.

(b) Fructose, also known as fruit sugar, is 53.29% oxygen by mass.

(c) Octane, a component of gasoline, is 84.12% carbon by mass.

(d) Ethanol, the alcohol in alcoholic beverages, is 52.14% carbon by mass.

Since volume and temperature are constant, this means that pressure and_____are____proportional. the sample with the largest____will have the_____pressure.

Answers

Since volume and temperature are constant, this means that pressure and number of moles are directly proportional. the sample with the largest number of moles will have the high pressure.

Since, the ideal gas equation is also called ideal gas law. So,  according to ideal gas equations,

PV = nRT

P is pressure of the sampleT is temperatureV is volume n is the number of  molesR is universal gas constant

At constant volume and temperature the equation become ,

P ∝ nR

since, R is also constant. So, conclusion of the final equation is

P  ∝ n

The number of moles and pressure of the sample is directly proportion. So, on increasing number of moles in the sample , pressure of the sample also increases.

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What is the name of the amide bond between amino acids?
a. polyamide bond
b. polyamine bond
c. polyamino acids bond
d. protein bond
e. peptide bond

Answers

The name of the amide bond between amino acids will be peptide bond.

Peptide bonds are amide-type covalent bonds that form bonds that connect two adjacent alpha-amino acids throughout peptide or protein chains, starting at C1 of one as well as [tex]N_{2}[/tex] of another.

The substances are known as amino acids, or the "building blocks of proteins," and play a variety of vital functions in the human body. Humans require them for essential functions like producing hormones, neurotransmitters, even proteins. In meals high in protein like meat, fish, as well as soybeans, amino acids could be concentrated.

Therefore, the name of the amide bond between amino acids will be peptide bond.

Hence, the correct answer will be option (e)

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How much energy does a 9 × 108 m wavelength photon have?

Answers

Answer:

2.2 x 10⁻³⁴ J

      or

2.2 x 10⁻¹⁸ J

Explanation:

You can calculate the energy using the photon energy equation:

E = hc / λ

In this equation,

-----> E = energy (J)

-----> h = Planck's Constant (6.626 x 10⁻³⁴ J*s)

-----> c = speed of light (3.0 x 10⁸ m/s)

-----> λ = wavelength (m)

You can plug the given wavelength, along with the other constants, into the equation and simplify to find the energy.

E = hc / λ

E = (6.626 x 10⁻³⁴ J*s)(3.0 x 10⁸ m/s) / (9 x 10⁸ m)

E = 2.2 x 10⁻³⁴ J

I suspect that you may have forgotten the negative sign in front of the 8 (9 x 10⁻⁸). This would change your answer to 2.2 x 10⁻¹⁸ J.

Calculate your % yield of co2 in the reaction based on the grams of nahco3 being the limiting reagent in the reaction.

Answers

The percent yield of CO₂ is 93.3%.

What is the percent yield of CO₂?

The percent yield of a substance is given as follows:

Percent yield = actual yield/theoretical yield * 100 %

The equation of the reaction is used to determine the theoretical yield.

NaHCO₃ + CH₃COOH → CH₃COONa + H₂O + CO₂

Moe ratio of sodium bicarbonate and CO₂ is 1 : 1.

Given that sodium bicarbonate is the limiting reactant, the theoretical yield of CO₂ will be:

Moles of NaHCO₃ reacting = 2.01/84 = 0.0239 moles

Theoretical yield of CO₂ = 0.0239 moles * 22.4L/mol = 0.536 L

Actual yield = 0.50 L

Percent yield = 0.50/0.536 * 100%

Percent yield = 93.3%

In conclusion, the percent yield is the ratio of the actual yield and theoretical yield.

Note that the complete question is given below:

Calculate your % yield of co2 in the reaction based on the grams of nahco3 being the limiting reagent in the reaction between 2.01 g of sodium bicarbonate and 24.6 mL of 1.5 M acetic acid? They produce 0.50 L of at s.t.p.

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es endotermica o exotermica? naoh (ac) + hcl (ac) --> nacl (ac) + h2o (l) + 58.4 kj

Answers

Answer:

Exothermic

Explanation:

Reactions which are endothermic require heat. Reactions which are exothermic release heat as a product. Therefore, since heat is a product in this reaction (58.4 kJ), it is exothermic.

Remember,

reactants ---> products

The procedure calls for 2.0 ml of concentrated nitric acid. how many moles is this?

Answers

Answer:

ρHNO₃= 1.51 g/cm3

ρ = m/V

m = ρ x V

m = (1.51 g/cm3)(2 cm3)= 3.02 g de HNO₃

n = m/PM = 3.02 g/63.01 g/mol = 0.0479 mol de HNO₃

Explanation:

2 mL of concentrated nitric acid equals 0.0479 mol

an acid accepts H and removes them from a solution, is a solution where the water molecules are intact

Answers

An acid accepts H and removes them from a solution

When placed in water, acids, bases, and salts dissociate (separate) into electrolytes (ions). Salts dissociate into a cation (that is not H+) and an anion (that is not OH-), whereas acids and bases dissociate into H+ and an anion. An acid separates into anions and hydrogen ions (H+). Strong acids produce a high concentration of H+ by dissociating every single one of their molecules . Water-based solutions,

Acid:

When a material or chemical is in solution, it releases hydrogen ions (H+), which are known as acids. All hydrogen ions (H+) and chloride ions (Cl-), which are normally bound together by ionic bonding, dissociate (separate) in water when exposed to a strong acid like hydrochloric acid (HCl). Only some ions disintegrate into hydrogen ions (H+) and bicarbonate ions (HCO3-) in a weak acid like carbonic acid (H2CO3), while others are still bound together by ionic bonds.

Define base?

A base is a chemical that, when in solution, emits hydroxyl ions -{OH). We can also define a base as a substance that releases hydroxyl ions (OH-), which mix with any hydrogen ions (H+) in the solution to generate water molecules (OH- + H+ = H2O).

Therefore, a substance that receives or accepts hydrogen ions (H+) that are already present in the solution qualifies as a base.

Because it totally dissociates into sodium ions (Na+) and hydroxyl ions (OH-) when placed in water, sodium hydroxide (NaOH), which is a strong base, is now liberated and dissolves in water.

c

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Briefly explain how you would name an organic compound containing each of the functional groups.

Answers

Functional groups include hydroxyl, methyl, carbonyl, carboxyl, amino, phosphate, and sulfhydryl.

Functional groups:

Regardless of the other atoms in a molecule, functional groups are particular groupings of atoms within molecules that have their own distinctive capabilities.

The prefixes di, tri, and tetra are applied when there are several substituents. Function-specific groups contain identifying suffixes. For instance, the parent chain name of alcohols has the suffix "ol" and a number indicating the location of the hydroxyl group. One is used to identify ketones.

If a compound has multiple functional groups, the highest priority functional group will be considered the "parent structure" and will define the "parent name"; the remaining functional groups will be considered the "substituents." The name of the parent structure is denoted by the "suffix," and the substituent is denoted by the "prefix."

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when gas evolution becomes very slow, heat the solution gently in the hood, then allow it to cool. What gas is formed in this reaction

Answers

Nitrogen gas is formed in this reaction.

Nitrogen gas

Atomic number 7 and the letter N designate nitrogen as the chemical element. Group 15 of the periodic table, often known as the pnictogens, contains nitrogen as the lightest nonmetal element. It ranks eighth in overall abundance in the Milky Way and the Solar System, making it a common element in the cosmos. Two of the element's atoms combine to create the colorless and odorless diatomic gas N2 at standard temperature and pressure. The most common element that isn't mixed, N2 makes up around 78 percent of the Earth's atmosphere. All living things contain nitrogen, which is mostly found in amino acids (and thus proteins), nucleic acids (DNA and RNA), and the energy-transfer molecule adenosine triphosphate.

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Conclusion: why do you think it is important to record your data with all the decimals provided by the instruments even if they are zero? How does this help with data analysis?

Answers

It increases the degree of accuracy for your results.

Oxidizing acids, such as nitric acid, can explode when mixed with what type of incompatible chemical? air water organic chemicals or materials compressed gases

Answers

Oxidizing acids, such as nitric acid, can explode when mixed with what type of incompatible chemicals like alcohol, or charcoal.

An oxidizing acid is a Brønsted acid that is a strong oxidizing agent. most Brønsted acids can act as oxidizing agents because the acidic proton can be reduced to hydrogen gas. a few acids include other structures that act as stronger oxidizing agents than hydrogen ions.

Oxidizing acids include concentrated perchloric acid, nitric acid, iodic acid, chromic acid, and the glass cleansing mixture of chromium trioxide and sulfuric acid.

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Liquids A and B form an ideal solution. The vapor pressure of pure A is 0.700 atm at the normal boiling point of a solution prepared from 0.250 mole of B and 0.650 mole of A. What is the vapor pressure of pure B at this temperature

Answers

The vapor pressure of pure B is 1.77atm

Given:-

Vapor pressure of Pure A = 0.700atm

Mole of A = 0.650mole

Mole of B = 0.250mole

Dalton's law of partial pressures states that the total pressure exerted by a gas mixture is equal to the sum of the partial pressures of all of the constituent gases.

So, Ptotal =  [tex]P_A + P_B[/tex]

According to Raoult's law, a solvent's partial vapor pressure in a solution (or mixture) is equal to or the same as the pure solvent's vapor pressure times the mole fraction present in the solution.

So, Ptotal =  [tex]X_AP_A + X_BP_B[/tex]

Ptotal = 1atm

1atm = (0.650/0.650+0.250 X 0.700atm) + 0.250/0.650+0.250 X [tex]P_B[/tex]

1atm = 0.722 X 0.700atm + 0.278 X [tex]P_B[/tex]

1atm = 0.506atm + 0.278 X [tex]P_B[/tex]

1atm - 0.506atm =  0.278 X [tex]P_B[/tex]

0.494atm = 0.278 X [tex]P_B[/tex]

[tex]P_B[/tex] =  0.494atm / 0.278

[tex]P_B[/tex] = 1.77atm

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How many moles of MgCl₂ are present in 60.0 mL of 0.100 M MgCl₂ solution?

Answers

There is 0.0600moles of MgCl2 in 60.0ml of 0.100M MgCl2 solution.

Explanation:

First we need to determine the number of moles of MgCl2 in 60.0L of solution.

After determining the number of moles,now multiply moles of MgCl2 by its Molar mass i.e (95.205g/mol)

We know Molarity= mol of solute/L solution

∴ 0.10 M MgCl2 = 0.10mol MgCl2/L

Step1:

First convert 60.0ml to litres.

1L=1000mL

60.0mL×1L/1000mL=0.0600L

Step2:

To determine moles of MgCl2, multiply 0.0600 L by the molarity of the solution

0.0600L×0.10mL/1L=0.0600mol MgCl2

∴ 0.0600moles of MgCl2 are present in 60.0mL of 0.100M MgCl2 solution.

what is molar mass?

Relative molar mass is defined as the smallest mass unit of a compound with one twelfth of the mass of one carbon – 12 atom.

In a substance, the amount of entities present for e.g. atoms, molecules, ions, is defined as a mole. A mole of any substance is 6.022×1023 molecules. Just as we take a standard value to calculate different things e.g. 1 dozen =12 items similarly we use the mole to calculate the size of the smallest entities quantitatively.

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what is molarity?

Molarity of a solution is defined as the number of moles of the solute dissolved per litre of the solution. I is represented as \textbf{`M`}. Thus a solution, which contains one gram mole of the the solution dissolved per litre* of the solution is regarded as molarity.

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Determine the number of moles in 50.0 grams of sodium. (the mass of one mole of sodium is 22.99 g.)

Answers

Answer:

2.17 moles

Explanation:

50 gm / 22.99 g / mole = 2.17 moles

Answer:

2.17

Explanation:

He nitrogen cycle is one of the most important (and complex!) of the biogeochemical cycles. Why is nitrogen important?

Answers

Nitrogen is an essential part of proteins and nucleic acids (DNA).

Why is nitrogen important?

All living things require nitrogen. It is a part of proteins, ATP, chlorophyll, DNA, and RNA. Given that it makes up a significant portion of the structures of biomolecules in living organisms, its synthesis and consumption in the biogeochemical cycle are of highest importance. Proteins are made up of amino acids (NH2 group).

The structural development of living species' genetic material (DNA, RNA) also involves nitrogen. It is a part of the nitrogenous bases, which together with other nucleotides create RNA and DNA.

Therefore, a nitrogen deficit can cause major structural issues for such an organism.

What happens if nitrogen cycle is disrupted?

A number of undesirable consequences can result from the nitrogen cycle being disrupted. For instance, an abundance of nitrogen in aquatic systems leads to eutrophication. Acid rain can be caused by a rise in atmospheric nitrogen.

The majority of ecosystems can tolerate low nitrogen levels since the majority of nitrogen is not biologically accessible in nature. Ecosystems become out of balance when humans significantly increase the quantity of nitrogen that is accessible through fertilizers, fertilizer use, and other means.

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5.18 L of nitrogen gas at 76.0°C are cooled to 6.0°C at constant pressure. Calculate the new volume of
the gas.
(write your answer in this space with sig digs and units - submit your work in the work space provided)

Answers

Answer:

0.409 L

Explanation:

Because you are dealing with volume and temperature, you need to use the Charles' Law equation:

V₁ / T₁ = V₂ / T₂

In this equation, "V₁" and "T₁" represent the initial volume and temperature. "V₂" and "T₂" represent the final volume and temperature.

V₁ = 5.18 L                            V₂ = ? L

T₁ = 76.0 °C                          T₂ = 6.0 °C

V₁ / T₁ = V₂ / T₂                                           <----- Charles' Law equation

5.18 L / 76.0 °C = V₂ / 6.0 °C                     <----- Insert values

0.06815789 = V₂ / 6.0 °C                          <----- Simplify left side

0.409 L = V₂                                              <----- Multiply both sides by 6.0

Which state of matter is being described below?
It cannot be squashed easily, spreads out slowly, is of medium density & flows to
fill up space
A. Plasma
B. Liquid
C. Gas
D. Solid

Answers

Answer:

C. Gas

Explanation:

I think this is the right answer because it fits the description

calculate the number of moles in 2 kg of iron​

Answers

Answer:

111600 moles

Explanation:

Number of moles= Mass ×Mr, where Mr is the relative molecular mass of the substance of interest. Note that the mass is calculated in terms of grams (1 kg= 1000 g), while the Mr can be found using the periodic table.

Mass of iron

= 2 kg

= 2(1000)

= 2000 g

Mr of iron= 55.8

Number of moles

= 2000(55.8)

= 111600 mol

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Which best describes the oxidizing agent in this reaction?
Cl2(aq) + 2Br–(aq) Right arrow. 2Cl–(aq) + Br2(aq)
Bromine (Br) is the oxidizing agent because it gains an electron.
Bromine (Br) is the oxidizing agent because it loses an electron.
Chlorine (Cl) is the oxidizing agent because it gains an electron.
Chlorine (Cl) is the oxidizing agent because it loses an electron.

Answers

For the reaction Cl₂(aq) + 2 Br⁻(aq) ⇒ 2Cl⁻(aq) + Br₂(aq), Chlorine (Cl) is the oxidizing agent because it gains an electron.

What is the oxidizing agent?

In a redox reaction, the oxidizing agent is the one that gains electrons, causing the other element to oxidize.

Let's consider the following redox reaction.

Cl₂(aq) + 2 Br⁻(aq) ⇒ 2Cl⁻(aq) + Br₂(aq)

The corresponding half-reactions are:

Reduction: 2 e- + Cl₂(aq) ⇒ 2Cl⁻(aq)

Oxidation: 2 Br⁻(aq) ⇒ Br₂(aq) + 2 e-

Which best describes the oxidizing agent in this reaction?

Bromine (Br) is the oxidizing agent because it gains an electron. NO. Br is the reducing agent.Bromine (Br) is the oxidizing agent because it loses an electron. NO. Br is the reducing agent.Chlorine (Cl) is the oxidizing agent because it gains an electron. YES.Chlorine (Cl) is the oxidizing agent because it loses an electron. NO. Cl gains electrons.

For the reaction Cl₂(aq) + 2 Br⁻(aq) ⇒ 2Cl⁻(aq) + Br₂(aq), Chlorine (Cl) is the oxidizing agent because it gains an electron.

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Answer:

C: Chlorine (Cl) is the oxidizing agent because it gains an electron.

Explanation:

The graph below shows how the pH of the soil in
a farmer's field changed over a period of time.
At which point, A, B, C or D, did the farmer apply
lime to the field?

Answers

Answer:

Point B

Explanation:

From 0 - 7 on the pH scale, substances are said to be acidic. At 7, the substance is said to be neutral. From 7 - 14, substances are basic.

Lime is a basic substance. Therefore, when it is added to the soil, one should expect that the soil becomes more basic. On the graph, this should be represented by the line increasing in pH. As such, the point at which lime was added was most likely Point B.

Which molecules are types of lipids?

Answers

Answer: The answer is fatty acids and triglycerides

Explanation:



Match the instrument described below with the decimal place of the
value to which this instrument must be recorded.
our meter stick
our quadruple beam scale
a 100 mL cylinder
a 1 L cylinder

Answers

The decimal place value of these instrument must be recorded as (i) our meter scale = 1 (ii) our quadruple beam scale = 0.001 (iii) a 100 mL cylinder = 1 (iv) a 1 L cylinder = 0.001.

What is Meter Stick ?

Meter stick which is used to measure the length especially used in the construction industry. The meter stick is 1 meter long. The metric unit for length is meter.

What is Quadruple beam scale ?

This is the instrument which is used to measure the mass very precisely. In quadruple beam scale the reading error is 0.001.

Thus from the above conclusion we can say that The decimal place value of these instrument must be recorded as (i) our meter scale = 1 (ii) our quadruple beam scale = 0.001 (iii) a 100 mL cylinder = 1 (iv) a 1 L cylinder = 0.001.

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Question: Match the instrument described below with the decimal place of the value to which this instrument must be recorded. ( 1 , 0.01 , 0.001 , 0.1 , 10 choose)

our meter stick =

our quadruple beam scale =

a 100 ml cylinder=

a 1 L cylinder=

For what mechanistic reason does g1 of lactase first act as a brønsted acid during catalysis?.

Answers

Glucose becomes a better leaving group.

In a manner similar to how protonation of an alcohol makes it easier to substitute a -OH group, glucose becomes a better leaving group when the oxygen atom is protonated.

What is Bronsted acid-base theory?

A substance that releases or donates hydrogen ions during a chemical reaction is referred to as a Bronsted-Lowry acid. A Bronsted-Lowry base, on the other hand, takes hydrogen ions. Another way to look at it is that a base accepts protons whereas a Bronsted-Lowry acid donates them. Amphoteric species are those that, depending on the circumstance, can either give or take protons.

Every Bronsted-Lowry acid gives a species that is its conjugate base a proton in exchange for the species' support. Each base in the Bronsted-Lowry system similarly accepts a proton from its conjugate acid.

I understand the question you are looking for is this:

For what mechanistic reason does G1 of lactase first act as a Bronsted acid during catalysis?

A) G1 becomes a better nucleophile

B) G2 becomes a better nucleophile

C) Glucose becomes a better leaving group.

D) Galactose becomes a better leaving group.

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4. A 0.51 kg solution contains 87 mg of potassium iodide. Calculate the W/W concentration
of this solution.

Answers

Taking into account the definition of percentage composition, the percent composition of potassium iodide in this sample is 0.017%.

Definition of percent composition

The Percentage Composition is a measure of the amount of mass that an element occupies in a compound and indicates the percentage by mass of each element that is part of a compound.

To calculate the percentage of composition, it is necessary to know the mass of the element in a known mass of the compound.

Percentage Composition in this case

In this case, you know that a 0.51 kg (or 510000 mg, being 1 kg= 1000000 mg) solution contains 87 mg of potassium iodide.

Dividing the mass amount of potassium iodide present in the compound by the mass of the sample and multiplying it by 100 to obtain a percentage value, the percentage composition of potassium iodide is obtained:

[tex]percentage composition of potassium iodide=\frac{87 mg}{510000 mg} x100[/tex]

percentage composition of potassium iodide= 0.017%

Finally, the percent composition of potassium iodide in this sample is 0.017%.

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What is Atom?????????? ​

Answers

An atom is a particle of matter that uniquely defines a chemical

element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.

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the covariance between stocks x and y is 141.6667. the standard deviation of stock x is 10.8012 and stock y is 15.2534. what is the correlation? 4. what are the four different kinds of feasibility that must be assessed? why is the feasibility of a system reviewed during the investigation, analysis, and design phases What controls the ratio of the two isotopes in foraminifera shells?. Necesito ayuda estoy en quiz defina el derecho a una familia ala recreacin y espacio Consider light from a helium-neon laser ( \(\lambda= 632.8\) nanometers) striking a pinhole with a diameter of 0.375 mm.At what angleto the normal would the first dark ring be observed? calculate the iterated integral. 64 1 8 x y y x dy dx 1 Two charges q1=2x10-10 and q2=8x10-10 are near each other and charge q1 exerts a force on q2 with force F12. What is F21 --the force between q2 and q1 ? which company sponsored the ride space mountain when it first opened at walt disney world in 1975? Determine the pH of a 0. 580 M KCH3CO2 solution at 25C. The Ka of CH3CO2H is 1. 80 10^-5. A) 9. 25 B) 4. 75 C) 7. 00 D) 12. 5 E) 1. 47 Simplify expression. 2s + 10 - 7s - 8 + 3s - 7. please explain. Bond A is a par bond and Bond B is a premium bond. All else equal, which bond has the higher coupon rate?ABA=BBond A is a par bond and Bond B is a discount bond. All else equal, which bond has the lower coupon rate?ABA=BBond A is a corporate bond and Bond B is a municipal bond. Which bond should have the higher yield to maturity?ABA=B How many permutations of the letters ABCDEFGH contain (no letters are repeated) (12 pts)? a. The string ED? b. The string CDE? c. The strings BA and FGH? d. The strings AB, DE, and GH? e. The strings CAB and BED? f. The strings BCA and ABF? Given the differential equation y' + 5y' + 2y = 0, y(0) = 1, y'(0) = 2 Apply the Laplace Transform and solve for Y(s) = L{y} Y(S) = Find the Laplace transform for the IVP: y"' + y = A8(t - 3.), y(0) = 1, y'(0) = 0 Y(s) = if t is in minutes after a drug is administered , the concentration c(t) in nanograms/ml in the bloodstream is given by c(t)=20te0.02t. then the maximum concentration happens at time t=? calculate the mass percent of a solution that is prepared by adding 27.5 g of naoh to 479 g of h2o. A metal surface is illuminated by light with a wavelength of 350 nm. The maximum kinetic energy of the emitted electrons is found to be 1.10 eV.What is the maximum electron kinetic energy if the same metal is illuminated by light with a wavelength of 250 nm? E2=....eV the 4 cs of creative thinking are from beghetto and kaufman. if you invented the lightbulb, which completely changed the way people live which of the 4 cs would this be? a) Little-c. b) Big-c. c) Pro-c. d) Mini-c. Reddy Company commenced operations in 2012. The company provided the following information for the year ended December 31, 2012 :Administrative costs$15,000Depreciation on factory equipment$6,000Indirect materials$1,000Marketing and distribution costs$12,000Salaries for factory supervisors$10,000Wages for production workers$13,000Raw materials used$19,000Sales revenue$98,000Selling costs$9,000Utilities for production facilities$4,000Ending work in process inventory$20,000Ending finished goods inventory$10,0001) Prepare a Schedule of Cost of goods manufactured and sold for the year ended December 31, 2012.2) Prepare an Income Statement for the year ended December 31, 2012. 2. why is it necessary to remove tert-butylcatechol from commercially available styrene before preparing polystyrene? The following two lines from an assembly language program will cause a hazard when they are pipelined together:lw $t0 0($t1)addi $t0,$t0,1The hazard that is caused by this sequence of instructions can be solved by data forwarding and using the cache.Given these facts, what type of hazard is occurring here?a)data hazardb)structural hazardc)Neither of the other answers are correct since both hazards are occurring.2.Which hardware device is used in decoding the machine language version of an instruction in the Instruction Decode stage of the Fetch Execution Cycle?a)cacheb)Control Unitc)$zero registerd)MMU