# Question #7e3cc

##### 1 Answer

#### Explanation:

The **density** of a substance is simply the mass of exactly **unit of volume** of that substance.

In your case, a sample of gold is said to have a volume of **density** of gold, you must calculate the mass of a

#1 color(red)(cancel(color(black)("cm"^3))) * "965 g"/(50color(red)(cancel(color(black)("cm"^3)))) = "19.3 g"#

Since this is the mass of

#color(darkgreen)(ul(color(black)("density = 19 g cm"^(-3))))#

I'll leave the answer rounded to two **sig figs**, but keep in mind that you have one significant figure for the volume of the sample.

Notice that this is the same as *dividing* the mass of the sample by its volume.

#"density" = "965 g"/"50 cm"^3 = 965/50 "g"/"cm"^3 ~~ "19 g cm"^(-3)# ##