Question

A small rock with a mass of 6 grams is dropped into a graduated cylinder with 20mL of water. The water rises to 23mL .What is the density of the rock.

Answer 1

Explanation:

As it is given that mass is 6 grams. Therefore, volume occupied by the rock is as follows.

                   Volume = final volume - initial volume

                                 = 23 ml - 20 ml

                                 = 3 ml

Since, density is defined as the amount of mass present in per unit volume of a substance.

Mathematically,            Density = $\frac{mass}{volume}$

Therefore, putting the given values into the above formula as follows.

                          Density = $\frac{mass}{volume}$

                                        = $\frac{6 g}{3 ml}$

                                         = 2 g/ml

Thus, we can conclude that density of the rock is 2 g/ml.

Answer 2

mass = 6g density = 2g/ml