In the electrolysis of water, how long will it take to produce 165.0 L of H2 at 1.0 atm and 273 K using an electrolytic cell through which the current is 113.0 mA?

How many cyanide atoms are in gallium cyanide?

51 CGaN

Answer:

56.58 percent

Answer:

Melting; increase (more heat) in temperature.

Bond-line structures are presentations of molecules, where lines are drawn to represent the bonds between carbon atoms or between carbon atoms and heteroatoms (atoms other than C or H). Hydrogen atoms are not represented. Heteroatoms are identified by a symbol but carbon atoms are not. Carbon atoms are situated at the intersection of two lines.

A single bond is defined by one parallel line and a double bond by two parallel lines, and a triple bond by three parallel lines.

In the line-bonds formula, the organic structures of the compound are represented in such a way that covalent bonds are represented by a line and frame the structure by zig-zag straight lines which releases all the hydrogen atom.

In the attached picture there is the bond-line structure of the requested organic compound.

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The percent composition by mass of aluminum in al2(so4)3 (gram formula mass = 342 grams) is 15.8%.

Aluminum sulphate is an ionic compound, a combination of both positive and negative ions. Ions are charged atom, which may either be monatomic ions (single atoms) or polyatomic (multiple atoms combined to form a charged part). Aluminum forms a + 3 ion, Al+3, and sulphate is the -2 polyatomic ion, (SO4)-2

So there are two aluminum atoms, three sulfur atoms, and 12 oxygen atoms in a single unit of the compound Al2(SO4)3. This sums to 17. Therefore, there are 17 atoms in a single unit of the compound Al2(SO4)3. The formula for aluminum sulfate is Al2(SO4)3. Then, in a formula unit of Al2(SO4)3 there are two aluminum ions and three sulfate ions; or two aluminum, three sulfur, and twelve oxygen atoms.

Total amu of this compound = 342

Therefore, percent composition of Aluminum = 54/342 x100 = 15.8%

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8) Percent yield = (0.48 g / 36 g) x 100% = 1.33%

9) Percent yield = (248 g / 176 g) x 100% = 141%

10) Percent yield = (45 g / 120 g) x 100% = 37.5%

The same units must be used for both the theoretical and actual yields (moles or grams). A chemical reaction produces 0.5 g of product. The calculated yield is 1.6 g at its highest. What is the reaction's yield in terms of percent? Actual yield minus theoretical yield equals 100% in percentage yield. The reaction's percentage yield is 31.25% as a result.

8) Known: 2 H2(g) + O2(g) → 2 H2O(1)

Unknown: percent yield

Steps:

Calculate the theoretical yield of water by using the balanced equation.

Compare the theoretical yield to the actual yield of water obtained from the experiment.

Use the formula: (Actual yield / Theoretical yield) x 100% = percent yield

Solution:

Theoretical yield of water = (2 moles H2 x 18 g/mol H2O) = 36 g

Actual yield of water = 0.48 g

Percent yield = (0.48 g / 36 g) x 100% = 1.33%

9) Known: 2 C2H6(g) + 7 O2(g) → 6 H2O(l) + 4 CO2(g)

Unknown: percent yield

Steps:

Calculate the theoretical yield of CO2 by using the balanced equation.

Compare the theoretical yield to the actual yield of CO2 obtained from the experiment.

Use the formula: (Actual yield / Theoretical yield) x 100% = percent yield

Solution:

Theoretical yield of CO2 = (2 moles C2H6 x (4 moles CO2 / 2 moles C2H6)) = 4 moles CO2

Theoretical yield of CO2 = 4 moles CO2 x (44 g/mol CO2) = 176 g

Actual yield of CO2 = 248 g

Percent yield = (248 g / 176 g) x 100% = 141%

10) Known: 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(1)

Unknown: percent yield

Steps:

Calculate the theoretical yield of NO by using the balanced equation.

Compare the theoretical yield to the actual yield of NO obtained from the experiment.

Use the formula: (Actual yield / Theoretical yield) x 100% = percent yield

Solution:

Theoretical yield of NO = (4 moles NH3 x (4 moles NO / 4 moles NH3)) = 4 moles NO

Theoretical yield of NO = 4 moles NO x (30 g/mol NO) = 120 g

Actual yield of NO = 45 g

Percent yield = (45 g / 120 g) x 100% = 37.5%

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The Lewis Structure Of COF2  is C:  O=F-F: .The Lewis structure of COF2 consists of one carbon atom, two oxygen atoms, and two fluorine atoms. The carbon atom is the central atom and is bonded to the two oxygen atoms.

In turn, each oxygen atom is bonded to one of the fluorine atoms. The Lewis structure indicates that each of the four atoms involved in the molecule has an octet of electrons.  The carbon atom has 4 valence electrons and each oxygen atom has 6 valence electrons. Thus, the carbon atom and each oxygen atom will form two covalent bonds with the fluorine atoms.

The two covalent bonds that the carbon atom forms with the oxygen atoms are single bonds, while the two covalent bonds that the oxygen atoms form with the fluorine atoms are double bonds.  The structure also includes two lone pairs on the oxygen atoms. Lone pairs are unshared electrons that are held by atoms in a molecule. In the case of COF2, both oxygen atoms have two lone pairs of electrons. These lone pairs are not involved in any bonding and help to stabilize the molecule.

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Answer:

False.

Compounds can have a charge. A compound is a substance made up of two or more elements that are chemically bonded together. The charge on a compound depends on the number of electrons in the outermost energy level, or valence electrons, of the atoms that make up the compound. If the compound has an equal number of protons and electrons, it will have no charge, and is called a neutral compound.

However, if there is an unequal number of protons and electrons, the compound will have a charge and is called an ionic compound. For example, the compound sodium chloride, NaCl, is made up of positively charged sodium ions and negatively charged chloride ions, and therefore has an overall charge of neutral.

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The ideal gas assumption is suitable for real gases when the temperature is high and the pressure is low.

The ideal gas law relates the pressure, volume, and temperature of a gas to the number of molecules present in a given volume. The constant R is the ideal gas constant and Ru is the universal gas constant.

These two constants are related by the equation Ru = R/M, where M is the molar mass of the gas. So, R is the gas constant for a particular gas, while Ru is the gas constant for all gases.

The ideal gas law is valid when the temperature is high, the pressure is low, and the volume of the gas is large compared to the volume of the molecules.

In these conditions, the ideal gas model is suitable for real gases because the molecules don’t interact significantly with each other and the volume of the gas is much larger than the volume of the molecules. Hence, the ideal gas law accurately models the behavior of the real gas.

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Final speed after 5.0 seconds if its starting speed were 50 mi/hr is 87.5 mi/hr.

Acceleration is a vector quantity, meaning it has both a magnitude (or size) and a direction. The magnitude of acceleration is measured in units of meters per second squared (m/s²) or feet per second squared (ft/s²). The direction of acceleration is the direction in which the velocity of an object is changing.

There are different types of acceleration:

Positive acceleration refers to an increase in velocity, for example, when an object speeds up.

Negative acceleration or deceleration refers to a decrease in velocity, for example, when an object slows down.

Constant acceleration refers to when the rate of change of velocity is constant, for example, when an object is falling freely under the influence of gravity.

Zero acceleration refers to when an object is moving at a constant velocity, for example, when an object is moving in a straight line at a constant speed.

To calculate the final speed of a car that can accelerate at 7.5 mi/hr/s, we can use the equation:

final speed = initial speed + acceleration x time

In this case, the initial speed is 50 mi/hr, the acceleration is 7.5 mi/hr/s, and the time is 5.0 seconds.

So, the final speed would be:

50 mi/hr + (7.5 mi/hr/s x 5.0 s) = 50 mi/hr + 37.5 mi/hr = 87.5 mi/hr

Therefore, the final speed of the car after 5.0 seconds would be 87.5 mi/hr.

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If  500.0 g of water is decomposed by electrolysis and the yield of hydrogen is only 75.3%. The amount of  hydrogen chloride  that can be made if the yield of hydrogen chloride in the second reaction is 69.8%  is 1,063g.

First we should calculate the moles of water, hydrogen:

nH₂O=mass H₂O/MassMolar H₂O

nH₂O=500.0g/18.0g/mol

nH₂O=27.76mol

moles of hydrogen gas:

nH₂=nH₂×1

nH₂=27.76mol×1

nH₂=27.76mol

Theoretical yield of hydrogen gas woulld be:

nH₂=mH₂/MMH₂

27.76 mol=m₂/2.016g/mol

m₂=27.76mol×2.016g/mol

m₂=55.96g

then we can calculate the actual yield of hydrogen gas:

Percent yield=Actual yield/Theoretical yield×100%

75.3%=Actual yield55.96g×100%

0.753=Actual yield55.96g

Actual yield=0.753×55.96g

Actual yield=42.1g

Number of moles of actual yield:

nH₂=mH₂/MMH₂

nH₂=42.1g/2.016 g/mol

nH₂=20.9mol

Number of moles of hydrogen chloride:

nHCl=nH₂×2

nHCl=20.9mol×2

nHCl=41.8mol

Theoretical yield of hydrogen chloride:

nHCl=mHCl/MMHCl

41.8mol=mHCl/36.46g/mol

mHCl=41.8mol×36.46g/mol

mHCl=1,524g

Actual yield of hydrogen chloride:

Percent yield=Actual yield/Theoretical yield×100%

69.8%=Actual yield/1,524 g×100%

0.698=Actual yield/1,524g

Actual yield=0.698×1,524g

Actual yield=1,063g

Therefore the   hydrogen chloride  that  can be made is 1,063g.

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The sigma bonds and pi bonds does the given  molecule have  is :

(CH₃)₂CCHCH₂CCCOOH , 19 sigma bond and 4 pi bond.

The given molecule given below :

(CH₃)₂CCHCH₂CCCOOH

     H         H   H               O

      |           |     |                 ||

H₂ - C - C = C - C - C ≡ C - C - O - H

            |             |

     H - C - H      H

            |

           H

The single bond in the molecule represent the one sigma bond . the double bond in the molecule represent the one sigma bond and the one pi bond. The triple bond in the molecule represent the one sigma bond and the two pi bond.

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Answer:

Salt and water is produced.

For example:-

NaOH(base)+HCl(Acid)=>NaCl(salt)+H20(water)

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Answer:

H2SO4 + 2NaNO2 → HNO2 + Na2SO4

The balanced equation for the breakdown of sulfuric acid and sodium nitrate is:

H2SO4 + 2NaNO2 -> HNO2 + Na2SO4

This equation shows that for every one molecule of sulfuric acid (H2SO4), two molecules of sodium nitrate (NaNO2) are required to produce one molecule of nitrous acid (HNO2) and one molecule of sodium sulfate (Na2SO4).

In terms of mass, the equation shows that for every 588 grams of sulfuric acid, 828 grams of sodium nitrate are required to produce 564 grams of nitrous acid and 384 grams of sodium sulfate.

The temperature of the copper sample will be the highest.

What uses does copper have?

Due to its ductility and excellent conductivity, copper is mostly used in electrical generators, home and auto wiring, as well as the wires in electronics like radios, TVs, computers, lighting, and motors.

A metal or a nonmetal, is copper?

Just on Periodic Table of Elements, copper is the 29th element. It is regarded as a moderately, nonferrous, malleable metals with countless uses in the fields of electrical and electronics, plumbing, construction projects & architecture, business, transportation, & consumer and health items.

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Ethanol use was effect the shortage of corn available on those time because of corn is an ingredient to produce the ethanol. Hence, ethanol use was aligned with the rarity of corn availability on those time. the more ethanol was used, the more rare corn availability for consumer.  

The drought is a condition where the area cant provide enough water supply for a long. Agriculture sector is the most affected sector when the drought occur. The drought cause crop failure, and this condition create domino effect on another sector such as food price get more expensive, and because of food get more expensive, buying power getting low cause small business out of business.

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The H+ ions separate from the aspirin at pH higher than pKa and then become deprotanated-ve charge.

[tex]pH=pK\alpha +[/tex]㏒[tex]\frac{A-}{HA}[/tex]

㏒[tex]\frac{A-}{HA} =pH-pK\alpha[/tex]

㏒[tex][\frac{A-}{HA} ][/tex]=1.5-3.5

[tex][\frac{A-}{HA} ]=10^{-2}[/tex]

[tex][\frac{A-}{HA}]=\frac{1}{100}[/tex]

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The acid in aspirin, acetylsalicylic acid, is very weak. Because of this, it must be more in unnionized form in the stomach's acidic pH. It must be more ionized for the intestine's alkaline pH.

For the same pH range, the small intestine absorbs more nutrients than the stomach. The intestinal absorption of aspirin is greater than the stomach absorption of the drug at pH 3.5 or 6.5.

The base-10 negative logarithm pKa serves as the acid dissociation constant (Ka) of a solution. One way to gauge an acid's potency is by looking at its pKa value. A stronger acid is indicated by a lower pKa value. A lower value, for instance, signifies that the acid dissociates completely in water.

[tex]pH = pKa + log\frac{A-}{HA}[/tex]

[tex]log\frac{A-}{HA} = pH - pKa[/tex]

[tex]log\frac{A-}{HA} = 1.5 - 3.5[/tex]

[tex][\frac{A-}{HA}] = 10^{-2}[/tex]

[tex][\frac{A-}{HA}] = \frac{1}{100}[/tex]

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Therefore, since the density of the samples are closer to the density of pyrite (5.01 g/cm³) we conclude that the samples are more like to be pyrite.

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When 50.2g of magnesium is combined with 40.8g of oxygen, 91 grams of magnesium oxide should be produced.

The law of conservation of mass states that the total mass of a closed system remains constant regardless of the chemical or physical changes that take place within it.

This law suggests that the amount of reactants of a chemical reaction must equate the amount of products of that reaction.

According to this question, magnesium reacts with oxygen gas to produce magnesium oxide. If 50.2g of magnesium reacts with 40.8g of oxygen, then;

50.2 + 40.8 = 91 grams of magnesium oxide will be produced.

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Answer:

Nuclear Fusion reactions power the Sun and other stars. In a fusion reaction, two light nuclei merge to form a single heavier nucleus.

Explanation:

Answer:

Explanation:

In an ionic bond, atoms transfer electrons in order to achieve a stable electron configuration, also known as a full valence shell. The number of electrons transferred from one atom to another can be determined by the difference in their electron configurations.

In the example of lithium and chlorine forming an ionic bond, lithium (Li) has one valence electron and chlorine (Cl) has seven valence electrons. In order for both atoms to achieve a stable electron configuration, Li would transfer its one valence electron to Cl. This results in the formation of two ions: Li+ and Cl-.

It is important to note that for a reaction to be ionic, it must involve the transfer of electrons from one atom to another. In the case of Lithium and Chlorine it is ionic because electrons are transferred from Li to Cl.

The partial pressure of helium (PHe) in this gas mixture is 72.3 kPa.

To find the partial pressure of helium (PHe) in a gas mixture containing oxygen, nitrogen, and helium, you can use the equation:

Total Pressure (PT) = PO2 + PN2 + PHe

Given that the total pressure of the mixture is 189.9 kPa, and the partial pressures of oxygen and nitrogen are given as 104.6 kPa and 13.0 kPa, respectively, you can use these values to solve for PHe.

PT = PO2 + PN2 + PHe

189.9 kPa = 104.6 kPa + 13.0 kPa + PHe

Solving for PHe:

PHe = PT - PO2 - PN2

PHe = 189.9 kPa - 104.6 kPa - 13.0 kPa

PHe = 72.3 kPa

So, the partial pressure of helium (PHe) in this gas mixture is 72.3 kPa.

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Dry ice, also known as solid carbon dioxide, sublimes when exposed to air.  As dry ice sublimes, it appears to be "smoking" or "fogging" due to the condensation of the gaseous carbon dioxide in the air.

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Stoichiometry and the mole concept state that a reaction between 1 x 1010 molecules and extra hydrogen produced 2 x 1010 molecules of ammonia.

A chemical reaction's stoichiometry involves figuring out the ratios of its constituent elements or molecules. The underlying laws of the associated relationships are the law of mass preservation and the law on combining weights & volumes.

To determine the amounts of different compounds contained in the sample, stoichiometry is employed in quantitative analysis.

The balance of chemical equations requires it.

In the example provided, since 1 molecule of nitrogen creates 2 molecules of ammonia, 2 x 1010 molecules o ammonia will be created when 2 x 10101/2=1 molecule.

As a result, 1 x 1010 molecules formed 2 x 1010 molecules of ammonia when they were combined with extra hydrogen.

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The number of 6p electrons in PO i.e. Polonium is four as the outer electronic configuration of Po is 6s^2 6p^4.

Po or Polonium in the periodic table belongs to the period 6 and group 16. As Po belongs to the period six thus we can take n=6. Also as the group of Po is 16 thus the element belongs to the p-block of the modern periodic table. By applying the orbital notation method we can find the formula as ns2np4. Putting the formula into the given element we can find the outer electronic configuration as 6s^2 6p^4 where p=4

We can understand that in the periodic table given by Mendeleev electronic configuration method is applied where it helps in understanding how in any atomic orbital electrons are distributed. The same is applied in the case of Polonium which helps in understanding that it has two 6s electrons and four 6p electrons.

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Explanation:

Cyclohexane ends with an -ane, which means that we have an alkane. An alkane consists of carbons and hydrogens with only single bonds. Hex means six, so there are six carbons. Cyclo means we have a ring, which is the six carbons each with two hydrogens, all single bonds.

Each carbon atom can form bonds with two hydrogens because carbon can form four bonds, which are from the two carbons and two hydrogens.

Answer: Calcium phosphate (Ca3(PO4)2) and phosphoric acid (H3PO4) are two different compounds.

Explanation: In order to determine how many grams of phosphoric acid are formed from 36.4 grams of calcium phosphate, we would need to know the reaction taking place and the stoichiometry of that reaction. Without that information, it is impossible to determine how many grams of phosphoric acid are formed.

Answer:

calcium phosphate (ca3(po4)2) and phosphoric acid(h3po4)

The marketed medications with pyrrole ring systems are known to have a wide range of biological properties, including the antipsychotic, beta-adrenergic antagonist, anxiolytic, anticancer (leukemia, lymphoma, and myelofibrosis, among others), antibacterial, antifungal, antiprotozoal, antimalarial, and many more.

The relative abundances of the three identified C4H5 isomers vary depending on the type of precursor (1-butyne, 1,2-butadiene, and 1,3-butadiene). The overproduction of hydroxyhempyrolin is what causes pyrrole disorder (HPL). The HPL binds zinc and B6, preventing the body from utilizing them and causes their excretion in the urine and hair. HPL is a neurotoxic biomarker for oxidative stress. Kryptopyrrole testing in the urine is used to identify pyrrole disorders. The goal is to count the HPL molecules in your body. A high level could be a sign of pyrrole dysfunction.

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Let's shift the nitrogen and carbon atoms from left to right since the answer is 2,2,1. Three hydrogen atoms bonded to one carbon form an SP3 hybrid on carbon.

Carbon hybridised with carbon on both sides in SP. There is a triple bond tying these two carbon atoms together. Bonding between carbon atoms and N's SP hybridization Prior to N, the penultimate C is SP2 hybridised (2 bonds and 1 lone pair). The C and N in question have two bonds.

Answer: 2,2,1  Atoms, which are little bits of matter, are what distinguish one chemical element from the others. A negatively charged core nucleus and one or more orbiting electrons make up an atom. There may be the positively charged, somewhat massive protons and neutrons that make up the nucleus.

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The ground pressure on that condition will be 1.4 Atm. The condition of that space is isotherms, to solve it we use Boyle's law in isotherms condition.

To solve this problem we are using Boyle's law. As Boyle's law state that " a gas's pressure and volume are inversely proportional" which is formulated as  P1 x V1 = P2 x V2. As per data given: early volume(V1) = 735 mL; pressure(P2) = 0.8 atm; and volume(V2) = 1286 mL. The calculation will be:

P1 x V1 = P2 x V2

P1 x 735 = 0.8 x 1286

P x 735 = 1028.8

P = 1.4 Atm

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Beryllium with 2 valence electrons would be able to pair with Se with 6 valence electrons. Option D.

Atoms form bonds with one another based on the number of valence electrons present in their outermost shell. Electrons are either donated, received, or paired.

In order for bonds to form, the participating atoms try to assume an octet structure, In other words, each atom tries to have a completely filled outermost shell. Thus, atoms with only a few electrons in their outermost shells readily donate them while those with just a few electrons remaining to fill up their outermost shell readily accept them.

Be has 2 outermost electrons, Se has 6. Be will readily donate the 2 outermost electrons while Se will readily accept 2 electrons for completely filled shell.

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