[naturenattie]

I have not had a high school chemistry class in several years and am now in Chem 1111 in college. I am also not known for my math skills, so I am wondering if someone might help me with a few problems so I can see if I am on the right track. I tend to pick things up well from seeing examples. I am not sure but you are always supposed to report answers in terms of significant figures. Can someone please help? Thank you.

1. The density of ice at 0 degrees C is 0.9168 g/mL and liquid water is 0.9999 g/mL. What is the mass of 1.000 mL of each of these?

I know mass= density x volume so would I do 0.9168 g/mL x 1.000 mL and get an ice mass of 0.9168 g?
                                                             0.9999 g/mLx 1.000 mL and get a liquid water mass of 0.9999 g?

2. What is the volume of 1.000 g of each of these?

For this volume= mass/density

1.000g/0.9168 g= 1.090 mL for ice
1.000/0.9999g= 1.0001 mL for ice    And based in the sig figs am I reporting these right?


3. What volume would 100.0 g of liquid water occupy at 0 degrees C ?

I am not sure about this one.

Thanks.

[Borek]

First two are OK, although with correct with sigfigs it should be just 1.000.

3 - is it different from 2^nd?

[naturenattie]

Hey thanks for the verification on the answers and I see what you mean about the sig figs. Dont worry about question # 3, I believe I have figured everything out. I am sure I will be back with more questions in the future. Your help is much appreciated.