8. a cube of gold (au) has a side length of 1.55 cm. if the sample is found to have a mass of 71.9 g, find the density of au.

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The density of Au is 19.3 g|cm^3

(^3 means to the power of 3)

Hope this helps!

~cupcake

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.