Part A Find the density, in g/c m 3 , of a metal cube with a mass of 57.1 g and

Question

Part A Find the density, in g/c m 3 , of a metal cube with a mass of 57.1 g and an edge length ( l ) of 2.75 cm . For a cube, V= l 3 . Express your answer to three significant figures and include the appropriate units.

Part A

In Europe, gasoline efficiency is measured in km/L . If your car's gas mileage is 40.0 mi/gal , how many liters of gasoline would you need to buy to complete a 142-km trip in Europe? Use the following conversions: 1km=0.6214mi and 1gal=3.78L .

Express your answer numerically in liters.

Part B

While in Europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 37.0 mi/gal ? Assume that 1euro=1.26dollars .

Express your answer numerically in dollars.

Explanation / Answer

Ans PART A

Density = Mass / Volume

Volume = (length)3

Volume = (2.75)3

Volume = 20.8 cm3

Density = 57.1 / 20.8

Density = 2.74 g/cm3

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