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Kipish [7]
3 years ago
12

A 0.532 mol sample of SO2 gas requires 52.3 s to effuse through a tiny hole. Under the same conditions, how long will it take 0.

532 mol of Ar gas to effuse?
Chemistry
1 answer:
scoundrel [369]3 years ago
3 0

Answer:

41.3 s

Explanation:

Let t₁ represent the time taken for SO₂ to effuse.

Let t₂ represent the time taken for Ar to effuse.

Let M₁ represent the molar mass of SO₂

Let M₂ represent the molar mass of Ar

From the question given above,

Time taken (t₁) for SO₂ = 52.3 s

Time taken (t₂) for Ar =?

Molar mass (M₁) of SO₂ = 32 + (16×2) = 32 + 32 = 64 g/mol

Molar mass (M₂) of Ar = 40 g/mol

Finally, we shall determine the time taken for Ar to effuse by using the Graham's law equation as shown below:

t₂ / t₁ = √(M₂ / M₁)

t₂ / 52.3 = √(40 / 64)

t₂ / 52.3 = √0.625

t₂ / 52.3 = 0.79

Cross multiply

t₂ = 52.3 × 0.79

t₂ = 41.3 s

Thus, the time taken for the amount of Ar to effuse is 41.3 s

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Answer:

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From the stoichiometry of the reaction 214.71  g of H₂S is required.

The equation of the reaction is;

Cr₂O₃(s) + 3H₂S(g) ⟶Cr₂S₃(s) + 3H₂O(l)

Number of moles of Cr₂S₃ produced :

=  421 g/200 g/mol

= 2.105 moles

From the balanced reaction equation;

3 moles of H₂S produced 1 mole of Cr₂S₃

x moles of H₂S is required to produce 2.105 moles moles of  Cr₂S₃

x = 3 moles × 2.105 moles/1 mole

= 6.315 moles of H₂S

Hence;

Mass of H₂S required

= 6.315 moles of H₂S × 34 g/mol

=214.71  g

What is the molar mass?

The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10²³ atoms, molecules, or formula units of that substance.

Is molar mass and atomic mass same?

Molar mass is the mass of the one mole of the compound whereas atomic mass is the mass of the individual unit of the compound. Basically, molar mass is the mass of an average of many elements of the compound and atomic mass is the mass of the atom.

Learn more about stoichiometry  reaction :

brainly.com/question/16060223

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5 0
2 years ago
The following two reactions are important in the blast furnace production of iron metal from iron ore (Fe2O3):2C(s) + O2(g) -&gt
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Answer: A) 67.1 moles

Explanation:

The balanced reaction is :

2C(s)+O_2(g)\rightarrow 2CO(g)

Fe_2O_3+3CO(g)\rightarrow 2Fe+3CO_2

To calculate the moles, we use the equation:

\text{Number of moles of iron}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{5.00\times 1000g}{56g/mol}=89.3moles

According to stoichiometry;

2 moles of iron is produced by 3 moles of carbon monoxide

89.3 moles of iron is produced by=\frac{3}{2}\times 89.3=134 moles of carbon monoxide

2 moles of carbon monoxide is produced by = 1 mole of oxygen

Thus 134 moles of carbon monoxide is produced by = \frac{1}{2}\times 134=67.1 moles of oxygen

3 0
3 years ago
Bismuth-210 has a half life of 5.0 days if you had a sample of 60.00g of Bismuth-210 how much would be left after 15 days? (Show
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Answer:

7.5 gm left

Explanation:

Bismuth-210 has a half life of 5 days

15 days is 15/5 = 3 half lives

since half the amount is left in 5 days or 1 half life

(1/2) x (1/2) x (1/2) the staring amount would be left in

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Which is the best example of how electromagnetic energy is used in everyday life
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Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

The best example of how electromagnetic energy is used in everyday life is <span>a patient receiving an X-ray in a hospital</span>
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