The density of a liquid is 1.25 g/mL. What is the mass of 75.0 mL of the sample?

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

density = 1.25 g/mL

volume = 75.0 mL

We have

mass = 1.25 × 75

We have the final answer as

Hope this helps you

answer: c.

explanation:

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.