Problem 55E

Use the prefix multipliers to express each measurement without any exponents.

a. 1.2xl0-9m

b. 22 x 10-15 s

c. 1.5 x 109 g

d. 3.5X106 L

Solution 55E Here, we have to calculate the mass of the air in room We know Density defines the mass per unit time Density = Mass/ Volume According to question Density of air = 1.19 g/L 3 Volume = 14.5 ft * 16.5 ft * 8.0 ft =1914 ft Now, we have to convert the volume ft to L3 1 ft3 = 28.317 L Therefore the volume in L = 1914 ft x3 28.317 = 54198.74 L 1 ft3 Thus Mass Density = volume Mass = Density x volume = 1.19 g/L x 54198.74 L = 64496.5 g Now convert the mass from g to kg We know 1000 g = 1 kg 1 kg The mass of the air in kg = 64496.5 gg x 1000g = 64.5 kg Thus, the mass of the air in that room is 64.5 kg