Density homework answers

Density is mass divided by volume, so that the density is 60 g divided by 30cm 3, which is 2.0 g/cm 3. Problem 3: In the above two examples which rock is heavier?

Finally, check to make sure your answer is reasonable. One way to do this is to mentally compare your answer against the density of water (1 gram per cubic centimeter). Light substances would float on water, so their density should be less than that of water. Heavy materials should have density values greater than that of water.

Specific gravity is the density of the substance divided by the density of water, so. Note that the units cancel, so this answer has no units. We say "the number is unitless .". Problem 9: You have a sample of granite with density 174.8 lbs/ft 3. The density of water is 62.4 lbs/ft 3.

To find the volume, use the formula for the volume of a box volume = length x width x height. 2cm x 2cm x 2cm = 8cm 3. Thus the cube is NOT gold, since the density (5.0 g/cm 3) is not the same as gold (19.3g/cm 3 ). You tell the seller to take a hike.