1.A sample has a mass of 15 g and a volume of 3 mL. Calculate the density.

Explanation:

The density of a substance can be found by using the formula

From the question

mass = 15 g

volume = 3 mL

We have

We have the final answer as

Hope this helps you.

it's c. elements are placed in rows based on how may valencies electrons have.

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?