Ashiny, gold-colored bar of metal weighing
57.3 g has a volume of 4.7 cm. is the bar of metal
pure gold?

No it is not of pure gold.

Explanation:

Density is defined as the mass contained per unit volume.  It is characteristic of a material.

Given : Mass of gold = 57.3 grams

Volume of gold =

Putting in the values we get:

Density of pure gold =

Thus as the density of the material is less as compared to density of pure gold, thus it is not pure gold.

it means there are 3 atoms of oxygen

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.