Calculate these volumes. (a) what is the volume of 11.3 g graphite, density = 2.25 g/cm3 ?

The volume is 5.02cm³.

Explanation:

The formula of density is: density (d) = mass (m)/ volume (v)

So, to calculate the volume from density and mass we use the density formula by making a few math steps:

- From this: d = m/v

- The volume pass to the other side of the formula as the density goes dividing the mass: v = m/d

- Then, replace the information: v = 11.3g/(2.25g/cm³)

- By dividing, we find that the volume is v = 5.02cm³

the answer is either b or c

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.