An electric motor works by converting electrical energy to mechanical energy in order to create motion.
For example,Force is generated within the motor through the interaction between a magnetic field and winding alternating (AC) or direct (DC) current.
This works because…
Answer : When an electric current flows through the wire in the electromagnet, a magnetic field is produced in the coil.
[tex]\:\mathsf{Hope\:this\:helps\:you!}[/tex]
Answer:
when an electric current flows through the wire in the electromagnet , a magnetic field is produced in the coil .
Explanation:
Hope it's helpful for you .........Calculate the mass percent of water in the formula:
MgSO4.7H20
Please help me and explain how you got it I gotta pass my chem class pls help!
Answer:
%H20=
(14xH)+(7xO)______________________________ X 100(Mg) + (S) + (4 x O) + (14 x H) + (7 x O)Thus,(14 x 1.008) + (7x16.0)______________________________________ X 10024.31 + 32.06 + (4x16.0) + (14 x 1.008) + (7x16.0)=126.122_____________ X 100246.482= 0.512 x 100=51.2%There is 51.2% of water is Magnesium Sulphate-7-water.
A sample of aluminum chloride (AIC1z) has a mass of 37.2 g.
a. How many aluminum ions are present?
b. How many chloride ions are present?
c. What is the mass in grams of one formula unit of aluminum chloride?
The answers to your questions are as follows
A) The number of aluminium ions present = 1.62 * 10²³ ions
B) The number of chloride ions present = 9.86 * 10²³ ions
C) The mass of one unit of aluminium chloride = 133.34 grams
Given data :
mass of aluminium chloride = 37.2 g
molar mass of aluminium chloride = 133.34 g/mol
note : I mole of a molecule has 6 * 10²³ molecules
Number of moles = mass / molar mass = 0.27 moles
Determine the number of aluminum ions and chloride ions presentA) aluminium ions present
moles of AlCl₃ * 6 * 10²³
= 0.27 * 6 * 10²³ = 1.62 * 10²³ ions
B) Chloride ions present
moles of AlCl₃ * 6 * 10²³ * 3
= 0.27 * 6 * 10²³ * 3
= 4.86 * 10²³ ions
C) The mass of one formula unit of aluminium chloride = 133.34 grams
Hence we can conclude that the answers to your question are as listed above.
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which acid would produce the salt zn(no3)2
Answer:
Explanation:
Nitric Acid (HN03)
Zn(OH)2 + 2HNO3 ==> Zn(NO3)2 + 2HOH
Between which atoms do hydrogen bonds form in water?
A) Oxygen and hydrogen atoms in the same water molecule
B) Oxygen and hydrogen atoms in different water molecules
C) Hydrogen atoms in the same water molecule
D) Oxygen atoms of different water molecules
Answer:
right answer is A bcz
Explanation:
In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules creates a bond known as a hydrogen bond.
Answer:
oxygen and hydrogen indifferent molecules
Using the data below, what would be the independent variable?
Height of foam
Type of soda
Number of mentos
Color of mentos
Answer:
Number of mentos
Explanation:
i took the quiz
A mixture of H2 and water vapor is present in a closed vessel at 20. 00°C. The total pressure of the system is 755. 0 mmHg. The partial pressure of the water vapor 17. 50 mmHg. What is the partial pressure of H2? Type in your answer using the correct number of significant figures. MmHg.
The partial stress of H2 is 737.47 mmHg Let's observe the Ideal Gas Law to find out the whole mols.
We count on that the closed vessel has 1L of volume
P.V=n.R.TWe must convert mmHg to atm. 760 mmHg.1 atm755 mmHg (755/760) = 0.993 atm0.993 m.1L=n.0.082 L.atm/mol.K .293 K(0.993 atm 1.1L)/(0.082mol.K /L.atm).293K = n0.0413mols = nThese are the whole moles. Now we are able to know the moles of water vapor, to discover the molar fraction of it.
P.V=n.R.T760 mmHg. 1 atm17.5 mmHg (17.5 mmHg / 760 mmHg)=0.0230 atm0.0230 m.1L=n.0.082 L.atm/mol.K.293 K(0.0230atm.1L)/(0.082mol.K/L.atm .293K)=n 9.58 × 10 ^ 4 mols = n.Molar fraction = mols )f gas/general mols.Molar fraction water vapor =9.58×10^ -four mols / 0.0413 molsSum of molar fraction =11 - 9.58 × 10 ^ 4 × mols / 0.0413 ×mols = molar fraction H20.9767 = molar fraction H2H2 pressure / Total pressure =molar fraction H2H2 pressure / 55mmHg = =0.9767 0.9767 = h2 pressure =755 mmHg.737,47 mmHg.What is a mole fraction?Mole fraction is a unit of concentration, described to be identical to the variety of moles of an issue divided through the whole variety of moles of a solution. Because it's miles a ratio, mole fraction is a unitless expression.
Thus it is clear that the partial pressure of H2 is 737,47 mmHg.
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"Ozone Depletion."
Spray bottles, air conditioners, and
refrigerators used to contain CFCs
and halogens. These chemicals
destroyed ozone and broke apart the
ozone layer. They made two large
holes at the North and South Poles.
However, most of these chemicals
are now not allowed.
What is the MOST accurate summary of this
paragraph?
Answer:
CFCs and halogens coming from spray bottles and other human satisfaction sustaining devices cause global warming, which will cause sea levels to rise. Because of this, several countries have banned these chemicals because of anticipation of a rise of sea levels and several important countries to be sunken.
A chemist wants to make a solution using a crystalline solid and water. Which action would speed up the solution-making process?
A
Heat the water while adding the crystalline solid.
B
Slowly cool the water while adding the crystalline solid.
C
Divide the water into smaller batches, adding a little of the solid to each.
The action that would speed up the solution making process is : ( A ) Heat the water while adding the crystalline solid
Ways to increase solution making processWhen preparing a solution or trying to dissolve a crystalline solid in water there are three ways which can be used to speed up the solution making process or dissolving the solid faster. and they are
Increase in temperature of water Divide the solid into smaller particles before adding them Increasing the stirring rateFrom the options listed above the best action is to heat the water while adding the crystalline solid.
Hence we can conclude that The action that would speed up the solution making process is : ( A ) Heat the water while adding the crystalline solid.
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Answer: A
Explanation: heat the water
6. What is the mass of the object if the net force acting on it was 356 N and the acceleration rate
was 4 m/s/s2
The mass of an object with a net force of 356N and an acceleration rate of 4m/s² is 89kg.
How to calculate mass?The mass of an object can be calculated using the following formula:
F = ma
Where;
F = force (N)m = mass (kg)a = acceleration (m/s²)m = F/a
m = 356/4
m = 89kg
Therefore, the mass of an object with a net force of 356N and an acceleration rate of 4m/s² is 89kg.
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Approximate the solution to the equation using three iterations of successive approximation
A solution has to do with the presence of a solute where there is a homogenous mixture of different substances in order to get their limit of solubility.
What is an Iteration?This refers to a method in organic chemistry where there is a sequence of reactions that are used to synthesize molecules.
Please note that your question is incomplete so I gave you a general overview to help you get a better understanding of the concept.
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If the equation: FeCl3+O2-->Fe2O3+Cl2, how many moles of chlorine gas can be produced if 4 moles of FeCl3 react with 4 moles of O2?
Answer:
6 moles of Cl2
Explanation:
First, the equation has to be balanced, which makes it 4 FeCl3 + 3 O2 --> 2 Fe2O3 + 6 Cl2
Using this information, we can see that one mole of O2 will not be present in the reaction. Since four moles of FeCl3 are needed to react in the equation, which would produce six moles of Cl2, and only four moles of FeCl3 are present, six moles of Cl2 would be produced.
I NEED THE AWNSER RIGHT NOWWWWW Four students categorized several environmental changes as short-term or long-term changes. Which chart correctly categorizes short- and long-term changes?
Based on the duration and effect of the environmental change, the correct categorization is as follows:
Short-term changes - Fire, flood, pollution of waterways, disease Long-term changes- extinction, early frost, deforestation, desertificationWhat are environmental changes?Environmental changes refers to changes that occur in the environment either due to natural causes or by human activities.
Environmental changes can be categorized into:
short-term changes andlong-term changesShort-term changes occur over a short period of time while long-term changes occur over a long period of time.
Based on the chart, the correct categorization is as follows:
Short-term changes - Fire, flood, pollution of waterways, disease Long-term changes- extinction, early frost, deforestation, desertificationTherefore, both long-term and short-term changes occur in the environment.
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Select the correct answer below that correctly describes what a Arrhenius Acid Base reaction is.
Question 1 options:
An acid base reaction where one compound increases the amount of H+ or OH- in solution.
An acid base reaction where one compound is donating an H+ and one atom is accepting an H+
An acid base reaction where one compound is donating electrons and another compound is accepting electrons.
An acid base reaction where one compound is donating an OH- and one atom is accepting an OH-.
From the options, the statement ththat describes an acid - base reaction in the Arrhenius sense is; "an acid base reaction where one compound is donating an H+ and one atom is accepting an H+."
What is the Arrhenius definition?The Arrhenius definition of a base is that a base is a substance that releases hydroxide ions as its only negative ions in solution. An acid is a substance that produces hydrogen ions as its only positive ions in solution.
If we look at the definitions shown here, the only one that accurately depicts acid - base reaction in the Arrhenius sense is "an acid base reaction where one compound is donating an H+ and one atom is accepting an H+."
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What are the examples of 8 branches of chemistry?
Answer:
hmm suspicious
lol I don't know bye
A solute is added to water and a portion of the solute remains undissolved. When equilibrium between the dissolved
Answer:
are you to measures how much solute dissolved with the water or trying to measure how much more water you need the solute to dissolve in ?
The solute is a component of the solution that is added to a solvent to make a solution. when equilibrium is attained then the solution will be saturated.
What is a saturated solution?A saturated solution is a solution that contains the maximum amount of dissolved solute particles in it and cannot further dissolve solutes added additionally.
When the solute is added and does not get dissolved then the equilibrium between dissolved and undissolved is reached and the solution becomes saturated.
Therefore, the solution is saturated.
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What two countries have nearly 50% of global coal reserves? a. united states and canada b. united states and russia c. brazil and russia d. brazil and canada please select the best answer from the choices provided a b c d
Answer:
B
Explanation:
The two countries that have nearly 50% of global coal reserves are
United States and Russia
Option B is correct
What is the global coal reserves?
Estimates of total world proved recoverable coal reserves as were around 1,156 billion short tons, with five countries accounting for roughly 75% of the world's proven coal reserves.
In conclusion, The USA coal reserves amounted to nearly 248.9 billion metric tons in 2020
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what is a water cycle
Answer:
the cycle of water and how it evaporates with energy from the sun and the droplets are stored in clouds which is condensation and when it rains or snows those are forms of precipitation
Explanation:
Answer:
it shows the continuous movement of water within the earth and atmosphere
The antibiotic prontosil, developed by bayer pharmaceuticals in 1932, was used in saving the life of president roosevelt's son from severe strep throat in 1936. protonsil consists of two nitrogens bonded together in a double bond. the left nitrogen is bonded to a benzene ring where the para position contains a sulfur double bonded to two oxygen atoms and single bonded to n h 2. the right nitrogen is bonded to a benzene ring where one ortho and the para position each have an n h 2 substituent. substituent prontosil is an azo dye, which can be prepared from an aryldiazonium ion and an aromatic compound. draw the structures of the diazonium ion and the coupling component for this drug
Prontosil is a compound produced by the coupled reaction of an aryldiazonium ion and an aromatic compound.
What are diazonium compounds?
These are organic compounds in which there are ionic interactions between the azo group (-N₂⁺) and an anion X⁻.
The general structure is RN₂⁺X⁻.
R is the lateral chain that might be an aromatic ring, among other options.N₂⁺ is the azo groupX⁻ is the anionThe azo group characterizes as being unstable and reactive. This property is because one of the N atoms has a positive charge.
-N⁺≡ N
What is the coupling reaction of aryldiazonium compounds?Aryldiazonium salt reactions can occur in two ways,
Substitution reactionsCoupling reactionsCoupling reactions are the aromatic electrophilic substitution, where the aryldiazonium ion acts as an electrophile for an activated aromatic compound to attack it.
The coupling reaction occurs at the azo group level.
In the exposed example,
the benzene ring with sulfur bonded to oxygen atoms is the coupling componentthe benzene ring with NH₂ and the azo group is the diazonium ionIn the attached files you will find the drawings.
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Will autoionization of water be spontaneous at high temperatures
Answer:
100
Explanation:
Will autoionzation of water be spontaneous at high temperature
POSSIBLE POINTS:
I perform a Haber Process reaction and I get 10.0g of NH3, if I was theoretically supposed to get 15.7g, what is my percent yield?
O 63.69 %
O 60 %
O 63.7%
O 64 %
1
2
3
4
5
6
7
8
9
10
Answer:
63.7
Explanation:
Percent yield is actual yield over theoretical yield. In this case, 10/15.7 = .637 = 63.7%.
If 25 milliliter of 0. 80 m hcl is used to completely neutralize 40. Milliliters of naoh solution, what is the molarity of the base?
If 25 milliliter of 0. 80M HCl is used to completely neutralize 40. milliliters of NaOH solution, the molarity of the base is 0.5M.
How to calculate molarity?The molarity of a solution can be calculated using the following expression:
M1V1 = M2V2
Where;
M1 = molarity of acidM2 = molarity of baseV1 = volume of acidV2 = volume of base25 × 0.80 = 40 × M2
20 = 40M2
M2 = 20/40
M2 = 0.5M
Therefore, if 25 milliliter of 0. 80M HCl is used to completely neutralize 40. milliliters of NaOH solution, the molarity of the base is 0.5M.
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Calcium acetate reacts with sodium carbonate to produce calcium carbonate and sodium acetate
Answer:
(CH₃COO)₂Ca(aq) + Na₂CO₃(aq) = 2CH₃COONa(aq) + CaCO₃(s)
2CH₃COO⁻ + Ca²⁺ + 2Na⁺ + CO₃²⁻ = 2CH₃COO⁻ + 2Na⁺ + CaCO₃
Ca²⁺ + CO₃²⁻ = CaCO₃
what could have caused the change in the rock layers.
Answer: Changes in the environment
Explanation: the rocks are subjected to extreme heat and pressure, volcanic activities or movements on the Earth's surface.
Consider the following reaction in which all reactants and products are gases.
P4+6Cl2⟶4PCl3
A 100. ML reactor vessel is charged with 250. Mg of P4 and 4. 21 atm of Cl2 at 298 K. The reaction goes to completion.
How many moles of chlorine gas are initially in the vessel?
Based on the equation of the reaction, the moles of chlorine gas initially in the vessel is 0.12 moles
How many moles of chlorine were initially present?The moles of chlorine initially present is determined using the equation of the reaction:
P4 + 6 Cl2 ⟶ 4 PCl3At STP, 1 mole of P4 reacts with 6 moles of chlorine.
Molar mass of P4 = 124.0 g
Molar mass of chlorine = 71.0 g
Mass of P4 in reaction vessel = 250 mg = 0.25g
moles of P4 in 0.25 g = 0.25/124 = 0.02 moles
0.02 moles of P4 will react with 0.02 × 6 moles of chlorine = 0.12 moles of chlorine.
Therefore, the moles of chlorine gas initially in the vessel is 0.12 moles.
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How did supporter of the Constitution convince opponents to approve it?
what is the difference between bacteria and cancer cells
Limestone and lime are used in the treatment of acidic soils. what are the advantages and disadvantages of using limestone or lime in the treatment of acidic soil or water bodies?
I WILL GIVE BRAINLIEST!!!
Answer:
This study is an overview of previous studies on lime (quick and hydrated) -treated soil. Lime is the oldest traditional stabilizer used for soil stabilization. The mechanism of soil-lime treatment involves cation exchange, which leads to the flocculation and agglomeration of soil particles. The high pH environment then causes a pozzolanic reaction between the free Ca+2 cations and the dissolved silica and alumina. Lime-treated soil effectively increases the strength, durability and workability of the soil. Such treatment also improves soil compressibility. A fluctuation behavior was observed on the influence of lime on soil permeability. However, the factors affecting the permeability of the soil-lime mixture should be extensively studied. Nonetheless, lime treatment has a number of inherent disadvantages, such as carbonation, sulfate attack and environment impact. Magnesium oxide/hydroxide are thus proposed as a suitable alternative stabilizer to overcome at least some of the disadvantages of using lime in soil stabilization.
Explanation:
Actually I have a pdf on it to explain more if you want but how to get it to you is the issue. well I'm guessing the one I've put out should be very much okay, I hope so .
What are the key control points within the citric acid cycle?
The citrate synthase, isocitrate dehydrogenase, and the α-ketoglutarate dehydrogenase complex are the three key control points.
What are the key control points within the citric acid cycle?The key control points in citric acid cycle are the reactions catalyzed by citrate synthase, isocitrate dehydrogenase, and the α-ketoglutarate dehydrogenase complex.
So we can conclude that citrate synthase, isocitrate dehydrogenase, and the α-ketoglutarate dehydrogenase complex are the three key control points.
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The citric acid cycle is a chemical cycle that releases stored energy. Citrate synthase, isocitrate dehydrogenase, and alpha-ketoglutarate dehydrogenase are the control point of the cycle.
What is a citric acid cycle?The citric acid cycle or the TCA cycle (tricarboxylic acid cycle) is the chemical series of reactions that releases energy from food sources like fats, carbohydrates, and proteins.
The TCA cycle includes enzymes and many substances that regulate it but three major points are Citrate synthase, isocitrate dehydrogenase, and alpha-ketoglutarate dehydrogenase.
Therefore, they get inhibited, regulated, and limit the rate of the reaction.
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why electron configuration is important
Answer:
So that we know how many electrons are thre in which shell and how many shells are present in an atom....
Explanation:
Hope it helps!!!
How many moles of Oxygen gas are in a container that has a total volume of 33.0L at a pressure of 96.2kPa and a temperature of 35°C.
ideal gas constant= 8.31[tex]\frac{L(kPa)}{mol(K)}[/tex]
A 33.0-L container at 96.2 kPa and 35 °C contains 1.24 moles of oxygen.
What is an ideal gas?An ideal gas is a hypothetical gas whose molecules occupy negligible space and have no interactions, and which consequently obeys the gas laws exactly.
First, we will convert 35°C to Kelvin using the following expression.
K = °C + 273.15 = 35 + 273.15 = 308 K
We want to calculate the number of moles of oxygen in a 33.0-L container at 96.2 kPa and 308 K. We will use the ideal gas equation.
P × V = n × R × T
n = P × V / R × T
n = 96.2 kPa × 33.0 L / (8.31 l.kPa/mol.K) × 308 K = 1.24 mol
where,
P is the pressure.V is the volume.n is the number of moles.R is the ideal gas constant.T is the absolute temperature.A 33.0-L container at 96.2 kPa and 35 °C contains 1.24 moles of oxygen.
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