Answer:
okay in converting g to kg divide my 1000 and in converting cm³ to m³ divide by 1000000
7.9 x 10^-4 g/cm³ to kg/m³
we divide by 1000 and at the same time by 1000000
so that gives 1000000/1000 (it flips)
so we have 7.9 x 10^-4 x 1000000/1000
that gives 7.9 x 10 ^-1 kg/m³
which is 0. 79 kg/m³
