Given: 8CO + 17H2 → C8H18 + 8H2O In this chemical reaction, how many grams of H2 will react completely with 6.50 moles of CO? _______ grams of H2 will react completely

Answers

Answer 1

Answer:

27.63 g of H2.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

8CO + 17H2 → C8H18 + 8H2O

Thus, we can say that:

From the balanced equation above,

8 moles of CO reacted with 17 moles of H2.

Next, we shall determine the number of mole H2 that will react completely with 6.50 moles of CO.

This can be obtained as illustrated below:

From the balanced equation above,

8 moles of CO reacted with 17 moles of H2.

Therefore, 6.5 moles of CO will react with = (6.5 x 17)/8 = 13.813 moles of H2.

Therefore, 13.813 moles of H2 is needed to react completely with 6.50 moles of CO.

Finally, we shall convert 13.813 moles of H2 to grams. This can be achieved by doing the following:

Molar mass of H2 = 2x1 = 2 g/mol

Mole of H2 = 13.813 moles

Mass of H2 =.?

Mole = mass /molar mass

13.813 = mass of H2 /2

Cross multiply

Mass of H2 = 13.813 x 2

Mass of H2 = 27.63 g

Therefore, 27.63 g of H2 is needed for the reaction.

Answer 2
the answer should be 27.63g of H2

Related Questions

Which of the following shows how rate depends on concentrations of reactants?

Answers

Answer:

C

Explanation:

Rate = k(A)m(B)n

The correct option is C.

What are K , m and N in the rate law equation?

The specific rate constant (k) is the proportionality constant relating the rate of the reaction to the concentrations of reactants.The exponents m and n are the reaction orders and are typically positive integers, though they can be fractions, negative, or zero.

What do you mean by concentrations of reactants?

The increase in the concentration of reactants, the rate of reaction increases. Ions and molecules interact to form a new compound on increasing the concentration.

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The table below gives the numbers of protons, electrons, and neutrons in four atoms.
Atom
11
2
Number of protons
39
40
|39
40
Number of electrons
39
40
39
40
Number of neutrons
52
50
154
51
3
14
Based on the information that is given, which atom in the table has the highest mass?
O 1
2
3

Answers

Answer:

The atom with the highest mass with 139 protons and 154 neutrons, is atom 3

Explanation:

The information given are;

The number of protons, p, the number of electrons, e, and the number of neutrons, n, we have;

p,                               e,                       n,        

39,                             39,                     52

40,                             40                     50

139,                            39                     154

40,                              39                     51

Based on the information that the mass of the proton = 1.67262 × 10⁻²⁷ kg

The mass of the electron  = 1.094 × 10⁻³¹ kg

the mass of the neutron = 1.674927471 × 10⁻²⁷ kg

We have that the atom with the most number of neutron and proton which is atom 3, has the highest mass

we have

Can someone help no one is helping me

Describe one way in which each of the items you listed in Part 1 could be at least temporarily disrupted from equilibrium. Can you think of a way your body could respond to restore homeostasis after one of these disruptions? (3 points) Think about things that stress the body or do not supply the body's needs properly.

Answers

Answer:

Not enough exercise, not enough water, not a healthy diet. Consume fluids regularly during exercise, and drink 16 ounces of fluid for every pound lost during your workout.

Explanation:

Describe in general a process desert plants might need to carry out in order to maintain homeostasis. (4 points) All plants need water; think about how plants in an area without much water might be able to live.

Answers

Answer:

Cacti remain homeostasis because of the lack of leafs it has, because it has no leaves it absorbs less heat keeping more water, it also has a nice waxy coat that remains moist and grows depending on the amount of water it holds, and it's stem acts as a water supply keeping the plant fed and cool in harsh ecosystems.

Hope this helps.

Answer:

The person above me was right.

"Cacti remain homeostasis because of the lack of leafs it has, because it has no leaves it absorbs less heat keeping more water, it also has a nice waxy coat that remains moist and grows depending on the amount of water it holds, and it's stem acts as a water supply keeping the plant fed and cool in harsh ecosystems."

Explanation:

Consider the reaction below.
NH4 + H20 - NH3 + H30"
Which is an acid-conjugate base pair?
O NHA and NH3
O NH4" and H30*
O H20 and NH3
O H20 and H20"

Answers

Answer:

The correct ans is....

Option B) NH4" and H30*

Explanation:

NH4" and H30* is an example of conjugate pair

Hope this helps....

                              Pls mark my ans as brainliest :)PLS, PLS, PLS  

The acid-conjugate base pair : ( B ) NH₄⁺ and H₃O⁻

The chemical reaction is

NH₄ + H₂O --> NH₃ + H₃O

Acid-conjugate base pair

An acid-conjugate base pair is a pair that consists of two substances that are different from each other just by the presence or absence of a proton ( H⁺ ) it helps to determine the relative strengths of acids and bases.

Hence we can conclude that the acid-conjugate base pair : ( B ) NH₄⁺ and H₃O⁻.

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Which is the proper order for using a fire extinguisher? pull, aim, squeeze, sweep sweep, squeeze, aim, pull aim, pull, sweep, squeeze pull, sweep, aim, squeeze

Answers

Answer:

P.A.S.S

pull, aim, squeeze, sweep.

hope this answer correct (^^)..

Answer:

The proper way of using an extinguisher is:

pull, aim, squeeze and sweep.

Explanation:

P-pull

A-aim

S-squeeze

S-sweep

You can always use this to remember, okay.

Hope it helps.

Tartaric acid, C4H6O6, has the first ionization constant with the value: Ka1 = 9.20 × 10-4. Calculate the value of pKb for the conjugate base of tartaric acid. 10.963 3.036 1.087 x 10-11 9.20 x 10-4

Answers

Answer:

pKb = 10.96

Explanation:

Tartaric acid is a dyprotic acid. It reacts to water like this:

H₂Tart  +  H₂O  ⇄  H₃O⁺   +  HTart⁻         Ka1

HTart⁻  +  H₂O  ⇄  H₃O⁺   +  Tart⁻²           Ka2

When we anaylse the base, we have

Tart⁻²   +  H₂O  ⇄  OH⁻  +  HTart⁻       Kb1

HTart⁻  +  H₂O  ⇄  OH⁻  +    H₂Tart          Kb2

Remember that Ka1 . Kb2  = Kw, plus pKa1 + pKb2 = 14

Kb2 = Kw / Ka1  →   1×10⁻¹⁴ / 9.20×10⁻⁴  = 1.08×10⁻¹¹

so pKb = - log Kb2   → - log 1.08×10⁻¹¹ = 10.96  

(02.05 HC)
A scientist observed a certain type of a particular bacteria growing in a substance that had a 1,000 times higher amount of the antibiotic that targets this bacteria. Using complete
sentences, justify the observation based on your knowledge of natural selection

Answers

Answer:

Para otros usos de este término, véase Resistencia.

La resistencia antibiótica es la capacidad de un microorganismo para resistir los efectos de un antibiótico. La resistencia se produce naturalmente por selección natural a través de mutaciones producidas por azar. El antibiótico, al entrar en contacto con una población bacteriana, permite solo la proliferación de aquellas bacterias que presentan aquella mutación natural que anula la acción del antibiótico. Una vez que se genera la información genética, las bacterias pueden transmitir los nuevos genes a través de transferencia horizontal (entre individuos) por intercambio de plásmidos; o igualmente producto de una conversión lisogénica. Si una bacteria porta varios genes de resistencia, se le denomina multirresistente o, informalmente, superbacteria.

what is the the chemical name for hydroden and oxygen​

Answers

Answer:

hydrogen peroxide is a chemical name for hydrogen and oxygen

H2O is the Answer hope this helps

BrO3- (aq) + NO2(aq) → Br-(aq) + NO3-(aq) Balance this reaction in acidic conditions?

Answers

Answer:

BrO₃⁻ (aq) + NO₂(aq) + 4 H⁺→ Br⁻(aq) + NO₃⁻ + 2 H₂O

Explanation:

The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts.  

The coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.

By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.

Then, taking into account all of the above, you can determine the amount of elements on each side of the equation:

Left side: 1 Br, 5 O and 1 N

Right side: 1 Br, 3 O and 1 N

If the reaction occurs in an acidic medium:

Each excess oxygen atom is balanced by adding a molecule of water to the other side of the reaction. Hydrogens are balanced by adding protons (H⁺) on the opposite side to the water molecules.

So, balancing the oxygen:

BrO₃⁻ (aq) + NO₂(aq) → Br⁻(aq) + NO₃⁻ + 2 H₂O

Left side: 1 Br, 5 O and 1 N

Right side: 1 Br, 5 O, 1 N and 4 H

Then, balancing the hydrogens:

BrO₃⁻ (aq) + NO₂(aq) + 4 H⁺→ Br⁻(aq) + NO₃⁻ + 2 H₂O

Left side: 1 Br, 5 O, 1 N and 4 H

Right side: 1 Br, 5 O, 1 N and 4 H

You can see that you have the same amount on each side of the reaction. So the reaction is balanced.

Calculations
Weight of acetanilide = 2.7g
Theoretical yield of Nitroaniline =
Weight of para-nitroaniline = 1.5g
Percentage yield of para-nitroaniline =

Please help me which this and show me how you get the answer thank you

Answers

Answer:

Theoretical yield: 2.75g of paranitroaniline

Percentage yield: 54.5%

Explanation:

In strong-acid medium, acetanilide (Molar mass: 135.16g/mol) reacts producing para-nitroaniline (138.12g/mol) in a 1/1 reaction.

Theoretical yield of para-nitroaniline is the mass produced assuming a yield of 100%. That is:

2.7g acetanilide × (1mol / 135.16g) = 0.020 moles of acetanilide.

Assuming a yield of 100% are 0.020 moles of paranitroaniline. Theoretical yield is:

0.020 moles × (138.12g / mol) =

Theoretical yield: 2.75g of paranitroaniline

Percentage yield is:

(Actual yield / theoretical yield) × 100

Actual yield was 1.5g and percentage yield will be:

Percentage yield: (1.5g / 2.75g) × 100

Percentage yield: 54.5%

Don’t mind me just trying to get some points

For the reaction C + 2H2 - CH2, how many moles of hydrogen are required to produce
19.26 mol of methane, CHA?
Select one:
O a. 19.26
O b. 38.52
O c. 15.0
O d. 24.7

Answers

Answer: 38.52 moles of hydrogen will be required to produce 19.26 mol of methane

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]    

[tex]\text{Moles of} CH_4=19.26moles[/tex]

The balanced chemical reaction is:

[tex]C+2H_2\rightarrow CH_4[/tex]

According to stoichiometry :

1 mole of [tex]CH_4[/tex] is produced by =  2 moles of [tex]H_2[/tex]

Thus 19.26 moles of [tex]CH_4[/tex] will be produced by =[tex]\frac{2}{1}\times 19.26=38.52moles[/tex]  of [tex]H_2[/tex]

Thus 38.52 moles of hydrogen will be required to produce 19.26 mol of methane

the answer is 38.52 moles of hydrogen

Three compounds that nitrogen and oxygen can form are NO, NO2, and N2O3. The law of multiple proportions tells you

A. the ratio of nitrogen to oxygen is always the same.
B. nitrogen combines with oxygen in small whole number mass ratios.
C. energy is conserved.
D. mass is conserved

Answers

I think it’s B because this law recognizes the fact that two elements may combine to form more than one product.

The postulation of the law of multiple proportions tells us that; Choice B. nitrogen combines with oxygen in small whole number mass ratios.

The law of Multiple Proportions

Law of multiple proportions states that if two elements form more than one compound, then the ratios of the masses of the second element which combine with a fixed mass of the first element will always be ratios of small whole numbers.

On this note, nitrogen combines with oxygen in small whole number mass ratios.

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The temperature of a sample of gas at 8.5 atm and 59.2 °C increases to 140.0 °C. If the
volume is unchanged, what is the new gas pressure?
Select one:
O a. 10.6
Ob. 20.1
Oc. 6.84
Od. 119

Answers

Answer:

since that's the closest option we have

10.6atm

Explanation:

Since volume is constant

P1/T1 = P2/T1

P1 =8.5atm

T1 = 59.2°C = 332.2k

T2 = 140°C = 413k

P2 = ?

8.5/332.2 = P2/413

0.026 = P2/413

P2 = 0.026 x 413

P2 = 10.74atm

Which group in the periodic table contains the lightest ferromagnetic element?
A. Group 7
B. Group 8
C. Group 10
D. Group 9

Answers

Group 8 because the ferromagnetic

Group 8 in the periodic table contains the lightest ferromagnetic element. Therefore, option B is correct.

What is ferromagnetic material?

Ferromagnetism can be described as a property of certain materials that results in a large observed magnetic permeability and large magnetic coercivity to form a permanent magnet.

Ferromagnetic materials are metals attracted to a magnet, a consequence of large magnetic permeability. Magnetic permeability can be defined as the induced magnetization of a material because of the presence of an external magnetic field.

A steel plate can acquire a permanent magnetization, which depends not only on the strength of the applied field but varies greatly among ferromagnetic materials.

Ferromagnetism can be described as the strongest type and is responsible for the phenomenon of magnetism in magnets. Substances weakly to magnetic fields with 3 other types of magnetism which are paramagnetism, diamagnetism, and antiferromagnetism.

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A compound containing oxygen and group 16 and/or group 17 elements contains one of the following elements. The compound dissolves in water. Which element does
the compound contain?
A. Magnesium
B. Potassium
C. Barium
D. Strontium

Answers

Explanation:

pottassium  its one of covalent bond

Pretty sure the answer is B

A certain polyatomic ion contains 49 protons and 50 electrons. What's the net charge of this ion?
A. +1
B.-2
C. +2
D. -1

Answers

D, because the ion has one more electron (negative subatomic particle) than protons (positive subatomic particles).

Answer:

The charge - 1

Because the charge of proton is + and electron -

Charge = +49 +(-50)

= - 1

Explanation:

37.2 liters of a gas has a pressure of 362.43 kPa at 46.5 °C. If the pressure increases to
693.9 kPa and the temperature to 149.2°C, what would be the new volume of the gas?
Select one:
O a. 25.7
O b. 62.3
O c. 54
O d. 25.672

Answers

Answer:25.7

Explanation:

The answer would be 25.7

Sorry if it’s too late

2SO2(g) + O2(g) ⟶ 2SO3(g), △H = -198 kJ What is the enthalpy change that occurs when 58.0 g SO2 reacts with excess oxygen in the above reaction?

Answers

Answer:

Enthalpy change = -98.6kJ

Explanation:

Based on the reaction:

2SO₂(g) + O₂(g) ⟶ 2SO₃(g), △H = -198 kJ

When 2 moles of SO₂ (Molar mass: 64.066g/mol) reacts with 1 mole of oxygen, enthalpy change is -198kJ

To know enthalpy change of 58.0g of SO₂ with excess oxygen we need to calculate moles of SO₂ thus:

58.0g SO₂ ₓ (1mol / 64.066g) = 0.905 moles SO₂

If 2 moles of SO₂ produce an enthalpy change of -198kJ, 0.905 moles SO₂ will produce:

0.905 moles SO₂ ₓ (-198kJ / 2 moles SO₂) =

Enthalpy change = -98.6kJ

A solution of Cuso, is labelled 1.743 M. How much Cuso, in grams, must be used to make
1.4957 liter of solution?
Select one:
O a. 416.1
Ob. 0.007301
O c. 166.6
Od. 129.2

Answers

Answer:

Option A. 416.1 g.

Explanation:

Data obtained from the question include the following:

Molarity = 1.743 M

Volume = 1.4957 L

Mass of CuSO4 =..?

Next, we shall determine mole of CuSO4 present in the solution.

This is illustrated below:

Molarity is simply defined as the mole of solute per unit litre of the solution. Mathematically, it is expressed as:

Molarity = mole /Volume

With the above formula, we can obtain the mole CuSO4 present in the solution as follow:

Molarity = 1.743 M

Volume = 1.4957 L

Mole of CuSO4 =..?

Molarity = mole /Volume

1.743 = mole of CuSO4 /1.4957

Cross multiply

Mole of CuSO4 = 1.743 x 1.4957

Mole of CuSO4 = 2.607 moles

Finally, we shall convert 2.607 moles of CuSO4 to grams.

This can be obtained as follow:

Molar mass of CuSO4 = 63.55 + 32.06 + (16x4) = 159.61 g/m

Mole of CuSO4 = 2.607 moles

Mass of CuSO4 =..?

Mole = mass /molar mass

2.607 = mass of CuSO4 /159.61

Cross multiply

Mass of CuSO4 = 2.607 x 159.61

Mass of CuSO4 = 416.1 g

Therefore, 416.1 g of CuSO4 is needed to prepare the solution.

A. 416.1 is your answer sir

Calculate the amount of 0.1 M acid needed to neutralize 10,000 liters of pH 8.0 water. The acid is Sulfuric Acid - H2SO4 Show your work for brainliest

Answers

Answer:

0.963

Explanation:

pH is the potential of hydrogen that can be determined by the hydrogen or hydroxide ion concentration. 10 mL is the amount required of 0.1 M to neutralize.

What is pH?

pH estimates the acidic and the basicity of the solution when a solute is dissolved in the solvent.

Sulfuric acid is dissociated as:

H₂SO₄(aq) ⇌ H⁺(aq) + HSO₄⁻(aq)

pH is calculated as:

pH = -log [H⁺]

[H⁺] = 1x10⁻⁸ M

The moles in 10,000 L is, 10000L × 1x10⁻⁸  = 0.0001 moles

Moles of sulfuric acid required:

0.0001 moles × ( 1 mol H2SO4 ÷ 1 mol H⁺) = 0.001 moles

Further, volume is calculated as:

0.001 ×  (1L ÷ 0.1moles) = 0.01 L

Therefore, 10 mL of 0.1 M acid is needed to neutralize.

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According to this equation, how much P4O10 can be produced from 8.32 g of phosphorus? 4 P + 5 O2 → P4O10

Answers

Answer:

38.28

Explanation:

4×8.32(p)=33.28         33.28+5=38.28

Considering the reaction stoichiometry, 19.05 grams of P₄O₁₀ can be produced from 8.32 g of phosphorus.

The balanced reaction is:

4 P + 5 O₂ → P₄O₁₀

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

P: 4 moles O₂: 5 moles P₄O₁₀: 1 moles

The molar mass of each element or compound is:

P: 31 g/moleO₂: 32 g/moleP₄O₁₀: 284 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

P: 4 moles× 31 g/mole= 124 gramsO₂: 5 moles× 32 g/mole= 160 gramsP₄O₁₀: 1 moles× 284 g/mole= 284 grams

Then you can apply the following rule of three: if by stoichiometry 124 grams of P produces 284 grams of P₄O₁₀, 8.32 grams of P produces how much mass of P₄O₁₀?

[tex]mass of P_{4} O_{10}=\frac{8.32 grams of Px284 grams of P_{4} O_{10}}{124 grams of P}[/tex]

mass of P₄O₁₀= 19.05 grams

Finally, 19.05 grams of P₄O₁₀ can be produced from 8.32 g of phosphorus.

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A solar panel combines multiple photovoltaic cells. Which type of energy is used to power a solar panel?

Answers

Explanation:

Photovoltaic means electricity from light

photo = light voltaic = electricity

SUNLIGHT is the answer

Hope this is correct

HAVE A GOOD DAY!

Photovoltaic (PV) Systems as stated above. This is because they’re either on rooftops grounds and convert sunlight directly into power!

Find the mass of 3.02 mol Cl2.
Answer in units of g.

Answers

Answer:

the answer is 70.906 g/mol

Explanation:

Answer:

214.12 g

Explanation:

mass = no. of moles x molar mass

molar mass of Cl2 = atomic mass of Cl x 2

= 35.453 x 2

=70.906

so the mass of 3.02 mol Cl2 = 3.02 x 70.906

=214.12 g

For the reaction 2KClO3 - 2KCI+ 302 how many moles of potassium chlorate are
required to produce 107.9 g of oxygen?
Select one:
O a. 2.26
Ob. 3450
O c. 1150
Od. 6.74

Answers

Answer:

the answer will be Oa. 2.26

the reaxtion between calcium and nitrogen to form calcium nitride is a redox reaction.


In terms of electrons, explain why calcium is the reducing agent.​

Answers

Answer: Calcium is a reducing agent because it loses electrons and oxidises itself but reduces other reactants.

Explanation: Calcium belongs to the second group elements of the periodic table. All the elements present in group 2 have a +2 charge. Therefore the charge of calcium is Ca^{2+}. Calcium loses two electrons in a reaction and Ca is oxidized to Ca^{2+}. It acts as a reducing agent as it reduces it’s reactant and oxidises itself.

Use the Trapezoid Rule to approximate the value of the definite integral

Answers

Answer:

7.0625

Explanation:

The trapezoidal rule ( this is an approximation ) tells you that the average of the left and right endpoints should be as follows,

[tex]\int _a^bf\left(x\right)dx\:\approx \frac{\Delta \:x}{2}\left(f\left(x_0\right)+2f\left(x_1\right)+...+2f\left(x_{n-1}\right)+f\left(x_n\right)\right)[/tex]

where [tex]\Delta \:x\:=\:\frac{b-a}{n}[/tex] ... at this point we can apply the Riemann Formula, in order to divide the interval 0 ≤ x ≤ 2 into n = 4 subintervals of length [tex]\:\Delta x=\frac{1}{2}\:[/tex].

[tex]x_0=0,\:x_1=\frac{1}{2},\:x_2=1,\:x_3=\frac{3}{2},\:x_4=2[/tex] ,

[tex]\frac{\Delta x}{2}=\frac{\frac{1}{2}}{2}=\frac{1}{4}[/tex]

= [tex]\frac{1}{4}\left(f\left(x_0\right)+2f\left(x_1\right)+2f\left(x_2\right)+2f\left(x_3\right)+f\left(x_4\right)\right)[/tex] - Let's calculate the sub intervals for each, substituting to receive our solution.

[tex]f\left(x_0\right)= 0[/tex] ( this is as 0⁴ is 0 )

[tex]2f\left(x_1\right)= 1/8[/tex] ( this is as [tex]2\left(\frac{1}{2}\right)^4=1/8[/tex] )

[tex]2f\left(x_2\right)=2[/tex] ( 2 [tex]*[/tex] 1⁴ is 2 )

[tex]2f\left(x_3\right)= 81/8[/tex] ( this is as [tex]2\left(\frac{3}{2}\right)^4 = 81/8[/tex] )

And finally [tex]f\left(x_4\right) = 16[/tex], as 2⁴ is 16. Therefore, let us plug in our solutions for each into the primary expression, and solve,

[tex]\frac{1}{4}\left(0+\frac{1}{8}+2+\frac{81}{8}+16\right)[/tex] = 7.0625 - this is our solution. The correct answer is option c, and i hope this clarifies why.

Can u help no one is helping me ;(

We say that salts will dissociate but acids will react with water. We say that acids will
None are correct
hydrate
ionize
crystallize
hydrolize

Answers

Answer:

ionize

Explanation:

Acids are chemical substances that lose/donate their hydrogen ion (H+) when they react with water. This property of acids is termed IONIZATION. In a chemical reaction involving acids and bases, acids release their proton or hydrogen ion (H+) in the presence of water solutions to form a conjugate base, which is usually an anion.

For example, in the chemical reaction;

HX + H20 -------> X- + H30+

HX is the acid because it loses its electron to water and forms the anion, X-, which is the conjugate base. Hence, it can be said that acid HX ionizes in water.

Help PLZ!!! Which statement accurately represents the arrangement of electrons in Bohr’s atomic model? -Electrons move around the nucleus in fixed orbits of equal levels of energy. -Electrons move around the nucleus in fixed orbits of increasing levels of energy. -Electrons move randomly in the relatively large space surrounding the nucleus. -Electrons vibrate in fixed locations around the nucleus.

Answers

Answer:

electrons move around the nucleus in fixed orbits of equal amounts of energy

Explanation:

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. The correct option is option B.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron.

According to Bohr’s atomic model,  electrons move around the nucleus in fixed orbits of increasing levels of energy.

Therefore, the correct option is option B that is electrons move around the nucleus in fixed orbits of increasing levels of energy.

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Convert the pressure 525.4 torr to kPa.
Select one:
O a. 70.0
Ob. 3940
O c. 9.90
Od. 525

Answers

Answer:

Option A. 70.0 KPa.

Explanation:

Data obtained from the question include:

Pressure (torr) = 525.4 torr

Pressure (kPa) =?

The pressure expressed in torr can be converted kPa as shown below:

760 torr = 101.325 KPa

Therefore,

525.4 torr = (525.4 x 101.325) / 760 = 70.0 KPa.

Therefore, 525.4 torr is equivalent to 70.0 KPa.

The awnser is A - 70.0
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