What is the density of a #91# #g# rock with a volume of #28.5# #cm^3#? Chemistry Measurement Density 1 Answer anor277 Dec 1, 2015 Answer: Density, #rho#, is mass per unit volume. Explanation: Density of your rock: #(91*g)/(28.5*cm^3)# #~~# #3*g*cm^(-3)#. You can do a better estimate than this. Note that the units, #g*cm^(-3)#, are quite sensible and may be derived from the way the density is calculated.. Related questions How can density be used to identify substances? How can you find mass from density? How are density mass and volume related? How do you calculate mass using density and volume? How do you convert mass to density? How do you determine the density of a gas? What is the density of water? What is linear mass density? Why does density change with temperature? How does density affect ocean currents? See all questions in Density Impact of this question 244 views around the world You can reuse this answer Creative Commons License