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December 21, 2014

Homework Help: Chemistry;HELP

Posted by Victoria on Wednesday, January 16, 2013 at 2:35pm.

Use the 5-step method and be sure to include units where appropriate. Round your answers to the correct number of significant digits.

Mass m
Density = -------------- or D = -------
Volume v

Adjust the density formula and solve the problems below:

m
D = ------- Original Formula
v

Adjust the formula for the unknown v =

1. Pure gold has a density of 119.32 g/cm3. How large would a piece of gold be if it had a mass of 3118.97 g?


2. How many cm3 would a 515.932 g sample of copper occupy if it has a density of 18.92 g/cm3?


3. The density of lead is 111.342 g/cm3. What would be the volume of a 200.0 g sample of this metal?

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