[P-man]

OK, so you use D=m/v to calculate density. If you have only D and v, you use D*v=m. But what if you have only m and D? How do you find v?

And is it correct to state density as g/mL as well as g/cm³?

[cuongt]

OK, so you use D=m/v to calculate density. If you have only D and v, you use D*v=m. But what if you have only m and D? How do you find v?

And is it correct to state density as g/mL as well as g/cm³?

1mL = 1 cm i think,    well then again  1 ml = 1 cm cubed

v=m/D if u rearange

[enahs]

D=m/v, d*v=m, m/D=v

This is super basic algebra/arithmetic.
2=8/4, 2*4=8, 8/2=4. Same exact thing. You should do some math review.

The g/cm3 = g/ml is correct if you are talking about water, or dilute solutions in water where you assume the density of the solution is the same as water (as water is defined as ~1g/cm3, and one mililiter of water weighs 1 gram).

[Mitch]

You already knew D=m/V. So, multiply both sides by V and then divide both sides by D. Then you'll have V=m/D.

[Korokian]

what mitch said, and 1ml=1cm3

[P-man]

Yeah. Not enough thinking on my part. Sorry.