Match each of the following with its correct answer The mole fraction of N, gas in the air is 0.781 at 760 torr. Calculate the partial pressure of N, in air Choose Choose 372 248 What is the molar heat of combustion of methanol CH,OH ( in kJ/mol), if the combustion of 1.0 g of methanol causes a temperature rise of 3.68 °C in a bomb calorimeter that has a heat capacity of 6.43 J/0C? 193 252.9 757 593.5 A balloon originally had a volume of 5.39L at 317 K and a pressure of 755 mmHg. To what temperature ( in K) must the balloon be cooled to reduce its volume to 4.00 L at a pressure of 620 mmHg? Choose

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