Question

calculate (to three significant figures) the numerical part of the conversion factors needed to carry out the following unit conversions:

a) Density in 1.00 g/cm^3 to kg/m^3

b) area in 1.00 km^2 to cm^2

c) mass/area of aluminum foil in 1.00 mg/cm^2 to g/m^2

Answer 1

a) 1.00 g/cm³ = 1.00 (10^-3 kg) / (10^-6 m³) = 1000 kg / m³

b) 1.00 km² = 1.00 (10¹⁰ cm²) = 1.00 * 10⁵ cm²

c) 1.00 mg/cm² = 1.00 * 10^-3 g / (10^-4 m²) = 10.00 g/m²