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Stolb23 [73]
3 years ago
14

12 Significant Figures in Addition and

Chemistry
1 answer:
Pavlova-9 [17]3 years ago
8 0

Answer: 85.6

Explanation:

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When 15.0 g of fluorite (CaF₂) reacts with excess sulfuric acid, hydrogen fluoride gas is collected at 744 torr and 25.5°C. Soli
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The reaction equation is:  CaF₂ + H₂SO₄ → 2HF + CaSO₄

The molar ratio between fluorite and hydrogen fluoride is 1 : 1.

The moles of fluorite supplied are:

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The moles of hydrogen fluoride produced will be 0.2.Now, we may use the ideal gas equation to determine the temperature:

PV = nRT                                            T = PV/nR

T = (875 * 8.63) / (0.2 * 62.36)

T = 605.45K

The temperature will be 331.85 °C  which is  required to store the gas in an 8.63-L container at 875 torr.

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2 years ago
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How many of moles in 162 grams of H2SO4​
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How many molecules are in the quantities below.? 2.0 moles
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