Southern New Hampshire University Chemistry Moles Calculation Questions

please see attachment

What is the molar mass of a gas if 4.538g is present in a 17.IL container at the conditions of 20.3kPa and 95.2C? Based on its molar mass, what elemental gas would this be?

Answer _________ g/mol

Answer __________ (element symbol OR name)

Question 2

What volume container would be needed to have 5.77g of carbon monoxide at a pressure of 744torr and a temperature of 27.0 C? (round to the nearest hundredth)

Answer _______ L

Question 3

How many moles of nitrous oxide are present in a 32.23L container at 17C and 122kPa? (round to the nearest hundredth)

Answer ______ mol

Question 4

How many moles of mercury vapors are present in a 0.23Lcontainer at 114C and 103.3kPa? (round to 2 sig figs)

Answer_______mol

Question 5

What is the pressure of 3.21g of N2 at 282K in a 23.2L container? (round to the nearest tenth)

Answer______ kPa

Question 6

A container is filled with 1 mole of oxygen, 2 moles of nitrogen and 3 moles of helium. If the total pressure is 150.0kPa, what is the pressure from just the oxygen?

Answer________ kPa (Use four sig figs)

Question 7

What is the pressure if 1.12 moles of gas at 282K in a 23.2L container? (round to the nearest whole number)

Answer_______ kPa

Question 8

If you want the total pressure of a container to be 500.5kPa, and you already have 180.0kPa from hydrogen, 200.6kPa from nitrogen and 59.4kPa from xenon, how many kilopascals worth of carbon dioxide are needed ? (round to the nearest tenth)

Answer________kPa

Question 9

What is the molar mass of a gas if 3.32 g is present in a 2.3L container at the conditions of 100.3kPaand 25.2C? (round to the nearest tenth)

Answer_________ g/mol

Question 10

How many gams of oxygen gas (O2) are present in a 1.25L container are 17C and 202.8kPa? (round to the nearest hundredth)

Answer_________ grams