• What happened to the numbers of moles of a sample that originally occupied 500mL with 2.50 moles and then occupied 750 mL? • 322 mol of hydrogen occupies a volume of 197 L at STP. If the initial...

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Extracted text: • What happened to the numbers of moles of a sample that originally occupied 500mL with 2.50 moles and then occupied 750 mL? • 322 mol of hydrogen occupies a volume of 197 L at STP. If the initial temperature of the hydrogen was 37° C, what was its initial pressure? • The initial temperature of a 1.00 liter sample of argon is 20.° C. The pressure is decreased from 720 mm Hg to 360 mmHg and the volume increases to 2.14 liters. What was the change in temperature of the argon?