Thank You for the Help!

-qbkr21

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- Aug 23rd 2008, 04:37 PMqbkr21Significant Figure Help:
Thank You for the Help!

-qbkr21

http://i137.photobucket.com/albums/q226/qbkr21/104.gif - Aug 23rd 2008, 05:07 PMJhevon
- Aug 23rd 2008, 05:12 PMqbkr21RE:
So then what would my answer be 60? Also how does my work look is it correct. I'm still learning.

Thanks,

qbk21 - Aug 23rd 2008, 05:31 PMJhevon
- Aug 23rd 2008, 05:38 PMqbkr21
- Aug 23rd 2008, 05:48 PMJhevon
- Aug 23rd 2008, 05:52 PMqbkr21
- Aug 23rd 2008, 05:58 PMJhevon
- Aug 23rd 2008, 05:59 PMqbkr21
- Aug 23rd 2008, 06:25 PMqbkr21RE:
Just one other thing.

Suppose I wanted to convert

1.50 kg/m3 to g/L

I did and got 1.5 using only 1 significant figure how would I write this? - Aug 23rd 2008, 06:30 PMSpec
1.50 $\displaystyle kg/m^3$ is 1.50 $\displaystyle g/L$

1.50 with one significant number is 2, but you don't lose any significant numbers in the conversion from $\displaystyle kg/m^3$ to $\displaystyle g/L$.

Maybe you should read this article about significant numbers: http://en.wikipedia.org/wiki/Significant_figures - Aug 23rd 2008, 06:49 PMqbkr21RE:
I read the article in it's entirety. I'm just still confused.

1) 0.050 L to mL

I converted and found the answer to be 50 ml so I tried writing as 5 x 10^1

The system said it was wrong

2) 8.0 x 10^-8 m to nm

I converted and found the answer to be 80 nm so I tried writing as 8 x 10^1

The system said it was wrong

I'm still stuck.

Thanks,

qbkr21 - Aug 23rd 2008, 07:21 PMSpec
Maybe the system is expecting such an ambiguous answer? Have you tried entering 50 ml instead of

**5.0**x 10^1 ml?

Note the bold text. - Aug 23rd 2008, 07:46 PMqbkr21RE:
- Aug 23rd 2008, 07:51 PMSpec
The problem is that it is a bit ambiguous to write 1600 instead of 16 x 10^2. 1600 can be both 16 x 10^2 and 16.00 x 10^2.

In the first case you're limited to two significant numbers, and in the latter to four.