Question

The density of air under standard laboratory conditions is 1.29 kg>m3, and about 20% of that air consists of oxygen. Typically, people breathe about 1 2 L of air per breath. (a) How many grams of oxygen does a person breathe in a day? (b) If this air is stored uncompressed in a cubical tank, how long is each side of the tank? 1.54 ... A rectangular piece of

Answer 1

Explanation:

(a) Mass = volume × density

m = 12 L × (1.29 kg/m³) × (1 m³ / 1000 L) × (1000 g/kg) = 15.48 g

(b) Cube side length = ∛volume

s = ∛(12 L × (1 m³ / 1000 L)) = 0.229 m