Solve the following questions:
Question 1: A house has the footage of 2000 sqft. The ceiling height is 8' (8 ft). The air density is 1.3 kg/m3. What is the total mass of the air inside that house (your choice of units)?
Question 2: How many hours will it take a single adult to "breath through" all the air in the house from the question above? An adult breathes in/out 500 mL of air per inspiration, and makes 20 breaths per minute.
Please help for the above questions, totally confused!! Show each steps if possible, Thanks.