Multiple choice You are handed a 20 g rock that has a volume of 5 mL. What is the density? 100 g/mL 100 mL/g 4 g mL 4 g/mL Reveal answer Fill a bubble to check yourself D Correct answer Explanation Density is calculated as mass divided by volume. Here, 20 g / 5 mL = 4 g/mL.