Calculate the volume of 12 mg of a substance whose density is 2.92 g/mL. Express your answer in milliliters using the correct number of significant figures.

Question

Calculate the volume of 12 mg of a substance whose density is 2.92 g/mL. Express your answer in milliliters using the correct number of significant figures. Do not enter your answer using scientific notation.

Answer 1

Dimensional analysis:

12 mg x 1 g/1000 mg x 1 ml/2.92 g = 0.004109 ml = 0.0041 ml = 4.1x10^-3 mls (2 sig. figs.)