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Problem: Propane, C3H8, is a hydrocarbon that is commonly used as a fuel.Calculate the volume of air at 25°C and 1.00 atmosphere that is needed to completely combust 25.0 grams of propane. Assume that air is 21.0 percent O2 by volume. (Hint: we will see how to do this calculation in a later chapter on gases—for now use the information that 1.00 L of air at 25°C and 1.00 atm contains 0.275 g of O2 per liter.)

FREE Expert Solution
  • Start by writing the balanced combustion reaction of propane. 
  • From the mass of propane, we can use the balanced equation to get the moles  of Oby stoichiometry
  • Moles of Owill be plugged into an ideal gas equation to find V of O2
  • V of air will be calculated from V of O2 using the information where 21% of air is made up of O2
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Problem Details

Propane, C3H8, is a hydrocarbon that is commonly used as a fuel.

Calculate the volume of air at 25°C and 1.00 atmosphere that is needed to completely combust 25.0 grams of propane. Assume that air is 21.0 percent O2 by volume. (Hint: we will see how to do this calculation in a later chapter on gases—for now use the information that 1.00 L of air at 25°C and 1.00 atm contains 0.275 g of O2 per liter.)

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Gas Stoichiometry concept. If you need more Gas Stoichiometry practice, you can also practice Gas Stoichiometry practice problems.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry - OpenStax 2015th Edition. You can also practice Chemistry - OpenStax 2015th Edition practice problems.