Chemistry 3-2-09 Molecular Formulas
CHEMISTRY: You did it! Here’s the last lecture from chapter 7 – molecular formulas. If you can do empirical formulas, then this is a piece of cake! It’s just a couple of steps tacked on to the end of those problems. Practice, practice practice!!
March 4th, 2009 at 12:16 PM
Okay. So, how do you just get the basic chemical formula from a molecular or empirical formula? Thanks!!
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March 5th, 2009 at 9:38 PM
If you are given two formuals like C6H6 and C2C6,how would you determine the molecular formula,even though you arent given the percentage or mass?
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March 5th, 2009 at 11:06 PM
okay, so just for clarification, to find empirical formula out of a group of percentages. the process is percent to mass, divided by the mol # and then divide it by the smallest of the group?
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March 6th, 2009 at 12:25 PM
Daniel:
You divide the mass by the mass of the element and then do the rest of the steps.
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March 6th, 2009 at 8:42 PM
okay,so in a chemical formula how do you know if u put parenthesis around it or not?
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March 10th, 2009 at 1:36 PM
if its a polytomic ion
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