A Sample of Gas (1

question 87

Multiple Choice

A sample of gas (1.9 mol) is in a flask at 21°C and 697 mm Hg. The flask is opened and more gas is added to the flask. The new pressure is 782 mm Hg and the temperature is now 26°C. There are now __________ mol of gas in the flask.

• A)1.6
• B)2.1
• C)2.9
• D)3.5
• E)0.28

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