A sample of gas has a mass of 827 mg. Its volume is 0.270 L at a temperature of 88 ∘ C and a pressure of 975 mmHg. Find its molar mass

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Chemistry

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22 May, 18:07

A sample of gas has a mass of 827 mg. Its volume is 0.270 L at a temperature of 88 ∘ C and a pressure of 975 mmHg. Find its molar mass

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Answers (1)

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Melissa Valentine · Answer 1

Steps:

Mw = w * R * T / p * V

T = 88 + 273 = > 361 K

p = 975 mmHg in atm:

1 atm = 760 mmHg

975 mmg / 760 mmHg = > 1.28 atm

Therefore:

= 0.827 * 0.0821 * 361 / 1.28 * 0.270

= 24.51 / 0.3456

molar mass = 70.92 g/mol