The density of copper is 8.94 g/cm3. What is the mass of a rectangular sheet of copper is 10 cm wide, 45 cm long, and 0.2 cm thick?A sample of aluminum metal has a mass of 8.4 g. The volume of the sample is 3.1 cm3. Calculate the density of the aluminum.What is the density of an 84.7 g sample of an unknown substance if the sample occupies 49.6 cm3?If an liquid has a density of 1.67 g/cm3 , what is the volume of 45 g of the liquid?
(10 cm x 45 cm x 0.2 cm) volume. Mass volume x density. So. mass (8.94) x (10 x 45 x 0.2) Now YOU do the math.
Lets answer them in reverse order: 4) Density is g/mL. The liquid is 45g and 1.67 mL, so divide: 45g/1.67g/mL and your answer will be in mL 3) You want an answer in g/mL, so again divide: 84.7g/49.6 mL and your answer will be in g/mL 2) mass/volume or: 8.4 g /3.1 mL 1) This s the tricky one - you need to convert the dimensions to cm^3: 10X4.5X0.2 will give you the volume in cm^3 (which is mL) Now, divide the mass by the volume:.
