Top Posters
Since Sunday
L
3
d
3
y
3
a
3
n
3
d
3
e
3
d
3
c
3
p
3
M
3
a
3
Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
New Topic  
tommyo0729 tommyo0729
wrote...
Go to Answer
Posts: 84
Rep: 1 0
11 years ago
I am having trouble with my practice homework problems.  I need to know how to find number of atoms when given moles and element and how to find the number of moles when given the number of atoms and the element.  

Example Problems:

1. Element is Cr: Number of Atoms is 9.67 x 10^23............Find Moles
2. Element is Fe: Moles is 1.16 x 10^-5.........Find Number of Atoms

Please explain.
Thank you!
Read 638 times
2 Replies
Replies
Answer accepted by topic starter
rkarthik301rkarthik301
wrote...
#1
Posts: 98
Rep: 0 0
11 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

wrote...
#2
11 years ago
its simple mathematics as
1)          6.022 x 10^23 atoms = 1 mole

    then , 9.67 x 10 ^ 23 atoms = 1 x 9.67 x 10^23  / ( 6.022x 10^23)

 ............................. ................... = 1.606 moles



2) this one should try . its easy .then only u  will understand
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1057 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 249
  
 385
  
 320
Your Opinion
Who will win the 2024 president election?
Votes: 19
Closes: November 4
Previous poll results: Who's your favorite biologist?