can someone help please

label Chemistry
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 aspirin, C9H9O4, can be produced by the reaction of salicylic acid, C7H6O3, with acetic anhydride, C4H6O3: C7H6O3 + C4H6O3 => C9H9O4 + CH3CO2H . What mass of salicylic acid is needed for the production of 16.8 grams of aspirin? 

balanced reaction to determine the moles of reactant, then its mass. 
Dec 16th, 2014

From the given reaction, we can see that 1 mole of salicyclic acid will produce 1 mole of aspirin.

The molar mass of salicyclic acid is 138 and of aspirin is 261.

So 138 g of salicyclic acid will produce 261 g of aspirin.

If we want to produce 16.8 g of aspirin, we need  138 g/ 261 x 16.8 g = 8.82 g of salicycyclic acid

Answer: 8.82 g of salicyclic acid.

Dec 16th, 2014

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Dec 16th, 2014
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Dec 16th, 2014
Jun 26th, 2017
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