What is the mass of a sample of a substance with a volume of 120 ml and a density of 0.75 G ml?

To find the mass of the substance, you can use the formula: mass = density × volume. Given a density of 0.75 g/ml and a volume of 120 ml, the mass would be calculated as follows: mass = 0.75 g/ml × 120 ml = 90 g. Therefore, the mass of the sample is 90 grams.