Density/Chemistry question, PLEASE HELP!!!!!!?

Question

The density of a certain substance is 7.3 g cm^-3.

construct the following conversion factors (where all numbers have 3 significant figures and units are included):

The factor to convert volume into mass=

& The factor to convert mass into volume=

*tip d=m/v

Answer 1

m = d*v so the factor is d or 7.3 g cm^-3. Just multiply a given volume of your certain substance by 7.3 g cm^-3 to obtain your mass.

v = m/d so the factor is 1/d or .137 cm^3/g. Just multiply a given mass of your certain substance by .137 cm^3/g to obtain your volume.