Density and Conversion Practice

Convert 34.5 kg to micrograms. Show your work using DA and round to proper significant figures.

• 3.45 x 10¹⁰ micrograms

• 3.45 x 10^-10 micrograms

• 3.45 x 10^-11 micrograms

• 3.45 x 10¹¹ micrograms

• 3.45 x 10⁹ micrograms

Convert 345,000,000,000 centigrams to Megagrams. Show your work using DA and round to proper significant figures.

• 3450 Mg

• 3.45 x 10^-3 Mg

• 34.5 x 10² Mg

• 34.5 x 10^-2 Mg

• 3.45 Mg

Convert 34.5 Liters to cubic meters. Show your work using DA and round to proper significant figures.

• 0.0345 m³

• 3450 m³

• 3.45 x 10³ m³

• 3.45 x 10^-1 m³

A piece of Styrofoam has a density of 1.00 pound per cubic foot. What is the volume, in cubic meters, of a 5.0 pound piece of Styrofoam. (1.000 feet = 0.3048 meters) Just type the number with proper significant figures. Volume= ___m³

Show your work using DA and round to proper significant figures.

Styrofoam has a density of 1.0 lbs/ft³ (pounds per cubic foot). Convert this density to grams per liter (g/L) using the conversions given.

(1.000 lbs = 453.6 grams) (1.000 ft³ = 28317 mL)

Show your work using DA and round to proper significant figures.

• 0.016 g/mL

• 0.16 g/mL

• 2.0 x 10^-5 g/mL

• 13000 g/mL

• None of these.

Convert 34.5 Liters to cubic meters. Show your work using DA and round to proper significant figures.

• 0.0345 m³

• 3450 m³

• 34.5 m³

• 34500 m³

Convert 4.50 meters per sec (m/s) to miles per hour (mph). Use the conversion factors below.

(1.00 mile = 1609 meters). Show your work using DA and round to proper significant figures. 4.50 m/s = ___mph

Ethanol has a density of 789 kg/m³. What is the mass, in grams, of 3.0 cubic meters of ethanol? Use DA!

• 2.4 x 10⁶ grams

• 2.4 x 10³ grams

• 2.4 x 10^-6 grams

• 2.4 x 10^-3 grams

Ethanol has a density of 789 kg/m³. What volume, in cubic meters, will be occupied by 3.00 x 10³ grams of ethanol?

• 3.80 x 10^-3 m³

• 3.80 x 10¹ m³

• 3.80 x 10³ m³

• 3.80 x 10^-1 m³

Ethanol has a density of 789 kg/m³. Convert this density to g/mL. Use DA!

• 0.789 g/mL

• 789 g/mL

• 78.9 g/mL

• 7.89 g/mL