How would you find mL?

Question

The density of mercury is 13.6 g/mL. If you have a sample of mercury with a mass of 306.0 grams, how many mL of mercury do you have?

Jeeze I'm more of a workout kinda guy.. im no brains and i feel very dumb asking these questions, but i cant afford to fail and i really need to understand these..

thanks

Answer 1

No worries

For every milliliter there are 13.6 grams. You have 306.0 grams Hg.

Take 306.0 and divide it by 13.6 to see how many times a milliliter fits into 306.0 grams.

(306.0g)/(13.6g/mL) = 22.5 mL  

Notice that the units grams cancel out leaving you mL

same as multiplying 306.0g x 1/13.6 mL/g

Answer 2

It is known that:

density = mass/volume

You can see that the mass and density were given,so rearranging the equation, you'll have:

volume = mass/density

substituting the given in the eqn:

volume = 306.0 g / (13.6 g/mL)

volume = 22.5 mL  

Answer 3

306.0/13.6 = 22.5mL