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2StethoscopeZ

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Hello everyone, I am a clueless premed taking gen chem 1. I have a question that I have tried and tried to figure out, but simply cannot. It's in a few steps, and I can't figure out the last steps.

1) Calculate the number of moles in 2.1g of salicylic acid (GMM: 138g/mol)

This I figured to be 0.0152 moles of salicylic acid.

2) Calculate the number of moles in 4.0ml of acetic anhydride (GMM: 102g/mol. Density: 1.08g/ml)

This I figured to be 0.0424 moles of acetic anhydride.

Now what I can't figure out.

3) Based on the amounts of reagents specified in this experiment, calculate the theoretical yield of aspirin (GMM: 180g/mol) in terms of:

Moles:

Grams:

0.0152 x 180 = 2.73g

But for the moles one?
 

CodeBlu

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SDN isn't for homework help... I'm sure a mod will pop in and say that.


But, I think you have to use avogadro's thingy. Believe it or not, I was good at chemistry once... it's funny how quickly you forget stuff when you don't use it.
 
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2StethoscopeZ

2StethoscopeZ

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Jan 16, 2013
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SDN isn't for homework help... I'm sure a mod will pop in and say that.


But, I think you have to use avogadro's thingy. Believe it or not, I was good at chemistry once... it's funny how quickly you forget stuff when you don't use it.
That's why I'm hoping someone can help me before a mod comes in here. :naughty:
 
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