I am hoping that someone could help me with a couple of homework questions, here goes.

Use the density value to solve the folowing problems.

1. A graduated cylinder contains 18.0 mL of water. What is the new water level after 35.6 g of silver metal with a density of 10.5 g/mL is submerged in the water?

What I did was divide 10.5 g/mL into 35.6 g and came up with an answer of 3.3 mL. I then added 18.0 mL and 3.3 mL and my answer was 21.3 mL. Is this correct?

2. A thermometer containing 8.3 g of mercury has broken. If mercury has a density of 13.6 g/mL, what volume spilled?

What I did for this question was divide 8.3 g into 13.6 g/mL and came up with an answer of .61 mL. Is this correct? I got the answer by using a calculator and I think it is wrong. When I use the basics of division of decimals, the dot between the 8 and 3 should be moved to the right one spot and the same should be done with the dot between the 3 and the 6. The answer then would be 1.59 mL. Which is correct?

I am not the world's greatest math student but I will keep plugging away at what I need to learn.

Edit: I now think I did the second question wrong using "basics of decimals". I'd redo it but my boss is lurking the grounds.

Last edit by jbjints on Sep 13, '06

Feb 28, '16

How did you get 8.3 and 13.6

Last edit by sirI on Feb 28, '16