Hi - I need help with the following questions:

Julie dissolved 20 g of sugar in a cup of water. The mass of the solution was 500 g.

What volume (mL) of water did Julie start with?

How did you determine the starting volume of water?

2 answers

The density of the pure water she started with is 1.000 g/ml.

Divide water mass (480 g) by density to get volume, which in this case would 480 ml.

That is a very big cup! More like two.. a Starbuck's Grande
Thank you for this information.

Can you give me the formulas involved so I know how you got the answer?

It seems like the water mass was the mass of the solution minus the solute or 500-20 = 480. But how did you get the density of water = 1.000 g/ml?

These formulas would be helpful. Thanks again!