Homework Help Forum: 12th grade chemistry

Posted by Janice on Monday, March 30, 2009 at 6:32pm.

Calculate the number of grams in the following :[149.096 g/mole] 8.55 moles of (NH4)3PO4 IT WOULD BE NICE IF I CAN GET STEP BY STEPS TO GET ANSWER !!!

• 12th grade chemistry - Chopsticks, Monday, March 30, 2009 at 6:38pm

  First add up the molarity of your compound 3N= 42.0201 12H = 12.09528 P= 30.97376 4O = 63.99600 Add those number up and you should get 149.08 (I rounded). (8.55mole) * (149.09g/1mole) = ??

  
  

• 12th grade chemistry - Chopsticks, Monday, March 30, 2009 at 6:40pm

  Dang it! I did not know what the :[149.096 g/mole] meant until I looked back again. Apparently they gave your the total mass of the compound! I went through and did all that work for nothing! Anyways your answer should not be off by much, but if you it to be as accurate as the problem says than use replace the grams

  
  

• 12th grade chemistry - RickP, Friday, May 1, 2009 at 1:22am

  Also, you are not adding up the molarity of the compound. Molarity is numer of moles of solute per liter of solution.

  
  

• 12th grade chemistry - NAME OF WEAK LIGAND, Thursday, September 24, 2009 at 3:41am

  P

  
  

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