February 26, 2017

Homework Help: Chemistry

Posted by j on Sunday, February 3, 2008 at 6:59pm.

The density of gold is 19.3 g/cc (g/ml). If a gold rod has a diameter of 4.20cm and 8.0 cm long. What is the mass?

I just need to know if I did this right...
r= 2.1

3.14 x 2.1^2 x 8.0 = 110.835g

19.3 g/cc x 110.835g = 2139.12 g/ml

m = 2139.12

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