If you want the answer is centimeters is it going to be:
26.281 cm
If it make it easier for you to solve add 6.201 and 7.4 which will equal 13.601. Then add .68 to 13.601 which equals 14.281. Last add 12 to 14.281 which equals 26.281.
Hope this helps.
the poly atomic molecule is H2
Density is the measure of a mass per unit volume of a material substance
density= Mass/volume
The unit of density is g/cm^3
