What is the mass of a 4.29 cm cube of gold?

AI Thread Summary
To find the mass of a 4.29 cm cube of gold, first calculate its volume using the formula for a cube, which is edge length cubed. The correct volume of the cube is approximately 79.2 cm³, not 79.0 cm³. Given the density of gold is 19.3 g/cm³, the mass can be calculated by multiplying the volume by the density, resulting in a mass of about 1524.6 g. It's important to maintain precision in calculations, particularly with significant figures, to ensure accuracy. Therefore, the mass of the gold cube is approximately 1524.6 grams.
Kdawg22
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I need help with this question.

Each cubic centimeter of gold has a mass of 19.3 g. A cube of gold measures 4.29 cm on each edge.

What is its mass?
 
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Well, you know that every cubic centimetre of gold has a mass of 19.3 g. In other words, you've been given its density (19.3 g/cm3). What more do you need? If you know the total volume of the gold that you have, then you know the total mass of that volume of gold. Now, how does one go about calculating the volume of a cube given the length of its edges?
 
I know the volume is 79.0 cm3, I figured that meant the answer was 1524.7g, but I am working with webassign and it won't accept that.
 
4.29^3 is not 79.0. Maintain at least 4 decimal places during intermediat calculations. As a matter of fact, 79.0 has the incorrect number of sig-figs to begin with.
 

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