05-7-2012, 03:52 PM | #1 |
FFR Player
Join Date: May 2011
Posts: 230
|
Chemistry Help
Ok so this is the final question to my homework, and I cannot get this question wrong. I think I know the correct answer but I want to be 100% sure. Now I know this may be an easy question to most of you guys, so don't make fun of me too much.
A sample of iron has a volume of 10.0 mL. The density of iron is 7.87 g/mL. Which is the correct expression to calculate the mass of the sample using dimensional analysis? Here are the choices. 10.0 mL × (7.87 mL/1 g) 10.0 mL × (1 mL/7.87 g) 10.0 mL × (1 g/7.87 mL) 10.0 mL × (7.87 g/1 mL) Thanks in advance. |
05-7-2012, 03:54 PM | #2 |
End of the road
Join Date: Oct 2006
Location: Canada
Age: 31
Posts: 3,692
|
Re: Chemistry Help
lol its the last one 10.0 mL x (7.87 g/1 mL)
|
05-7-2012, 03:55 PM | #3 |
FFR Player
Join Date: May 2011
Posts: 230
|
Re: Chemistry Help
Thanks, I still might have more questions.
|
05-7-2012, 04:30 PM | #4 |
FFR Player
Join Date: May 2011
Posts: 230
|
Re: Chemistry Help
Here's another one I'm stuck on
If the heat of fusion is 32.2 kJ/mol, the amount of heat energy required to melt 5.67 grams of FeO is - 5.32 kJ 2.54 kJ 18.3 kJ 3.26 kJ |
05-7-2012, 04:36 PM | #5 |
D6 FFR Legacy Player
Join Date: Jan 2009
Age: 32
Posts: 4,342
|
Re: Chemistry Help
|
05-7-2012, 04:39 PM | #6 |
FFR Player
Join Date: May 2011
Posts: 230
|
Re: Chemistry Help
Thanks, I got the answer.
|
05-7-2012, 04:52 PM | #7 |
FFR Player
Join Date: May 2011
Posts: 230
|
Re: Chemistry Help
|
05-7-2012, 05:07 PM | #8 |
FFR Player
Join Date: May 2011
Posts: 230
|
Re: Chemistry Help
1k credits to whoever answers, not much but it's something.
nvm I guessed and got it wrong
__________________
Last edited by DustyFart; 05-7-2012 at 05:09 PM.. |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|