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You have 9.494 grams of a diatomic gas being stored at STP in a 3.00 liter container. What is the gas?
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You have 9.494 grams of a diatomic gas being stored at STP in a 3.00 liter container. What is the gas?

User Carasel
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One mole of gas occupies 24 liters at STP.
Thus, moles of this gas = 3/24 = 1/8

Molar mass = 9.494 / (1/8)
Molar mass = 75.95

This is close to the molecular weight of Chlorine.
User Xofz
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