Oxygen gas reacts with powdered aluminum according to the following reaction:

Question

4Al(s)+3O2(g) yields 2Al2O3(s)

What volume of gas (in L), measured at 770 mmHg and 35 degrees C, is required to completely react with 53.9g of Al?

Answer 1

1. Convert 53.9 g Al to moles.
2. Using the coefficients in the balanced equation, convert moles Al to moles O2.
3. Use PV = nRT to convert moles O2 to volume at the conditions listed.