Question

A rectangular block of copper metal has a mass of 1745 g. The dimensions of the block are 8.6 cm by 5.3 cm by 4.9 cm. From this data, what is the density of copper?

Please Help!!

Answer 1

See below

Explanation:

Density = mass / volume

= 1745 g / (8.6 * 5.3 *4.9) cm^3 = 7.8 gm / cm^3

( two significant digits because measurements are two S.D.) . (Don't forget UNITS !)

Answer 2

density=mass/volume
8.6x5.3x4.9=223.342
1745/223.342=7.81312964
7.8(1d.p)
this should be right?