Friday

January 30, 2015

January 30, 2015

Posted by **Tim** on Thursday, October 14, 2010 at 10:00pm.

What mass (in grams) of P2O5 contains 1.20 x 1023 atoms of phosphorus?

1.20E23 atoms of P x (1 mol/ 6.022E23 atoms) x (5 mol O/ 2 mol P) x (1 mol P2O5/ 5 mol O) x (79.995g/ 1 mol P2O5) =

7.97g of P2O5

- Check a chemistry answer -
**DrBob222**, Thursday, October 14, 2010 at 10:32pmI don't understand why you went through the oxygen link; however, one factor canceled the other so no harm done except for extra work. The only error I see is the molar mass P2O5 should be 141.94 grams instead of 79.995.

**Answer this Question**

**Related Questions**

math check question - Subtract and Simplify: 4a^2/(a-b)-(4b^2-8ab)/(b-a) I have ...

Chemistry conversions check - I'm sooooooo not sure if I'm doing this right, but...

chemistry calorimetry - how can i get the mass of a liquid when i'm given the ...

Math - Hi, would someone mind just checking the answer I got for this formula ...

Chemistry - Ethanol boils at a temp. of 78.29 degrees C. What amount of energy, ...

Setting up a chem problem - Magnesium reacts with water in the equation, Mg+2H²O...

chemistry - How many grams of NaCl should be added to 250 grams of water to make...

Please Check My Math Work - Hi. - I solved this problem,but I am not sure if it ...

Algebra - I was wondering if someone could check over these answers for me. Find...

math - Can anyone help with combining like terms? The question - 11 + 5t^2 + t...