Need help with conversion question.

  • #1
First off, I am glad to be a newbie to the forum. I am a freshman at Colorado State University who is undeclared with a mechanical engineering concentration. In my Chemistry 111 class, I have been practing a practice test online, but the last problem I can't get right. Can anybody show me how to do it? Don't worry about cheating or anything, it is only a practice test and not worth any points.

Question:
A silicon atom-diameter 2.7X10 to the negative 10 meters, and a mass of 4.7X10 to the negetive 23rd grams. they are packed into a cube. What is the length of the cube formed by 1000kg of silicon atoms, packed this way?

the answer is 0.75 meters, but I can't get there, is the problem.
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
25,832
251
welcome to pf!

hi camrysedan92! welcome to pf! :smile:

(try using the X2 icon just above the Reply box :wink:)
A silicon atom-diameter 2.7X10-10 meters, and a mass of 4.7X10-23 grams. they are packed into a cube. What is the length of the cube formed by 1000kg of silicon atoms, packed this way?

show us what you've tried, and where you're stuck, and then we'll know how to help! :wink:
 
  • #3
SteamKing
Staff Emeritus
Science Advisor
Homework Helper
12,796
1,670
Hint: try figuring out how many silicon atoms are in 1000 kg of silicon.
 

Related Threads on Need help with conversion question.

  • Last Post
Replies
3
Views
3K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
5
Views
3K
  • Last Post
Replies
2
Views
4K
  • Last Post
Replies
11
Views
2K
  • Last Post
Replies
3
Views
4K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
8
Views
3K
Replies
3
Views
12K
Replies
1
Views
4K
Top