Question

I need answer fast please

A sample of gold has a mass of 38.6 grams and a volume of 2 cm3. What is the density of gold?

A sample of iron has a mass of 46.8 grams and a volume of 6 cm3. What is the density of iron?

Water has a density of 1.0 g/cm3. What is the mass of 10.0 cm3 of water

Answer 1

gold density = 38.6 *10^-3 / 2 *10^-6 = 19300 Kg/m3 Iron density = 46.8 *10^-3 / 6 *10^-6 = 7800 Kg/m3 water mass = density*volume = 1 * 10 = 10 grams = 0.01 Kg