+0  
 
+3
1391
2
avatar
How many molecules are there in 8.5 grams of Oxygen gas?
difficulty advanced
 Feb 4, 2015

Best Answer 

 #2
avatar+53 
+8

My apologies, this is if you were counting the total atoms, not molecules.  I found this to be really complex and I'm not even completely sure how to do it. However, my info is from this site and I will attempt to answer this question.  https://www.chem.wisc.edu/deptfiles/genchem/sstutorial/Text4/Tx44/tx44.html

 

 

One mole of oxygen is 16 grams, so here's a formula to possible solve it. 

 

 

 

 

 

 

$${\frac{{\mathtt{6.02}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{23}}}}{{\mathtt{16}}}} = {\frac{{\mathtt{n}}}{{\mathtt{8.5}}{grams}}}$$

 

So I'm thinking it's: $${\frac{{\mathtt{51.17}}{\mathtt{\,\times\,}}{{\mathtt{85}}}^{{\mathtt{23}}}}{{\mathtt{16}}}}$$

 

This is the total atoms you should get, if the formula is correct. If you want molecules, just divide the whole thing by 2 because there are 2 oxygen atoms in one molecule of oxygen gas.

I'm not sure. This is probably wrong, but I hope this helps or at least gives you an idea on how to do it. Good Luck!

 Feb 4, 2015
 #1
avatar+80 
+3

8.5/16= .53 I am a bit rusty on science but I think that is right.

 Feb 4, 2015
 #2
avatar+53 
+8
Best Answer

My apologies, this is if you were counting the total atoms, not molecules.  I found this to be really complex and I'm not even completely sure how to do it. However, my info is from this site and I will attempt to answer this question.  https://www.chem.wisc.edu/deptfiles/genchem/sstutorial/Text4/Tx44/tx44.html

 

 

One mole of oxygen is 16 grams, so here's a formula to possible solve it. 

 

 

 

 

 

 

$${\frac{{\mathtt{6.02}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{23}}}}{{\mathtt{16}}}} = {\frac{{\mathtt{n}}}{{\mathtt{8.5}}{grams}}}$$

 

So I'm thinking it's: $${\frac{{\mathtt{51.17}}{\mathtt{\,\times\,}}{{\mathtt{85}}}^{{\mathtt{23}}}}{{\mathtt{16}}}}$$

 

This is the total atoms you should get, if the formula is correct. If you want molecules, just divide the whole thing by 2 because there are 2 oxygen atoms in one molecule of oxygen gas.

I'm not sure. This is probably wrong, but I hope this helps or at least gives you an idea on how to do it. Good Luck!

YocenaTheRipper Feb 4, 2015

1 Online Users

avatar