Exploring Mass Conversion Challenges

What type of problem is described when both the given and the desired outcomes are in mass units?

• Theoretical yield problem

• Volume-volume problem

• Mass-volume problem

• Mass-mass problem

What are the products of the combustion of a hydrocarbon like propane?

• Oxygen and hydrogen

• Carbon monoxide and hydrogen

• Water and carbon dioxide

• Nitrogen and carbon dioxide

What does 'sufficient' oxygen imply in a combustion reaction?

• Oxygen is not involved in the reaction

• Excess oxygen beyond what is needed

• Just enough oxygen to complete the reaction

• Insufficient oxygen for the reaction

How many molecules of CO2 are produced for each molecule of propane burned?

• Four molecules

• Two molecules

• Three molecules

• Five molecules

What is the first step in solving a stoichiometry problem?

• Calculate the molar mass

• Write a balanced chemical equation

• Convert grams to moles

• Identify the limiting reactant

What is the molar mass of propane (C3H8)?

• 22.04 grams/mol

• 18.02 grams/mol

• 44.11 grams/mol

• 30.07 grams/mol

In the balanced equation, what is the coefficient of water (H2O)?

• 4

• 3

• 2

• 1

What is the ratio of moles of water to moles of propane used in the reaction?

• 1:4

• 1:1

• 2:1

• 4:1

What conversion factor is used to convert moles of propane to grams?

• Grams over moles

• Moles over liters

• Moles over grams

• Liters over moles

How many grams of water are produced from 50 grams of propane?

• 81.7 grams

• 50.0 grams

• 75.5 grams

• 100 grams