True or false When 200 g of propane undergoes complete combustion, the volume of oxygen gas required at SATP is 562 L

Question 29 of 59 Earth's atmosphere is approximately 78.0% nitrogen and 21.0% oxygen. What is the mass of oxygen in a cubic meter of air in a typical classroom at 1 atm and 25 ° C? (1 m³ = 1000 L)

What volume of CO2 gas is produced in the combustion of 4.34 g CH4 with excess oxygen at STP?

how many liters of oxygen gas at STP are required to burn 3.77 g of butane?

If 324 L of oxygen gas reacts at STP, how many moles of octane (C^8H^18) are burned with it?

If 95 grams of propane is burned during a fire, what volume of carbon dioxide is formed at STP?  C3H8 + O2 --> CO2 + H2O

1. At 500°C, and in the presence of a catalyst, steam (water vapour) reacts with carbon to give a mixture of hydrogen and carbon monoxide. What is the total volume of products that would be obtained from 150 L of steam and excess carbon at 500°C and 0.95 atm? What would be the volume of products at STP?

Calculate the number of molecules in 2.76  L of CO gas at STP

Please Help #30

Maps [References] A sealed balloon is filled with 1.00 L helium at 24°C and 1.00 atm. The balloon rises to a point in the atmosphere where the pressure is 220. torr and the temperature is -31°C. What is the change in volume of the balloon as it ascends from 1.00 atm to a pressure of 220. torr? Change in volume =