sulfur hexafluoride gas is collected at in an evacuated flask with a measured volume of . when all the gas has been collected, the pressure in the flask is measured to be . calculate the mass and number of moles of sulfur hexafluoride gas that were collected. be sure your answer has the correct number of significant digits.

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15-12-2022
Chemistry

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sulfur hexafluoride gas is collected at in an evacuated flask with a measured volume of . when all the gas has been collected, the pressure in the flask is measured to be . calculate the mass and number of moles of sulfur hexafluoride gas that were collected. be sure your answer has the correct number of significant digits.

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abhinavjh321 abhinavjh321 · Answer 1 · 2022-12-20T23:38:03-05:00

Sulfur hexafluoride gas has a mass of 2.8 g and a molecular weight of 0.019 when it is collected at in an evacuated flask with volume of 5.0L

To calculate the moles of sulfur hexafluoride gas, we use the equation given by ideal gas: PV =nRT

Given Pressure of sulfur hexafluoride (P) = 0.090 atm

Volume of the sulfur hexafluoride gas (V) = 5.0 L

Gas constant (R) = 0.0821

Temperature of sulfur hexafluoride gas (T) = 14C+273 = 287K

n = PV/RT = 0.090x5/0.0821x287 = 0.019mol

To calculate mass n = given mass/Molar mass

Molar mass of sulfur hexafluoride = 146.0 g/mol

mass = nxM = 0.019x146 = 2.8g

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complete question: Sulfur hexafluoride gas is collected at 14.0°C in an evacuated flask with a measured volume of 5.0L. When all the gas has been collected, the pressure in the flask is measured to be 0.090atm . Calculate the mass and number of moles of sulfur hexafluoride gas that were collected. Be sure your answer has the correct number of significant digits.