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Help due today :( a student weighs out 2.0841 g of salicylic acid (C7H6O3). How many moles of salicylic acid is the student using in this experiment?
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Help due today :(

a student weighs out 2.0841 g of salicylic acid (C7H6O3). How many moles of salicylic acid is the student using in this experiment?

User Emanuil Rusev
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1 Answer

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Find out the molar mass of salicylic acid, C7H6O3 :

Molar mass = 7(12) + 6(1) + 3(16) = 138 g mol-1

Now to find the mole, use the weigh of salicylic acid 2.0841g and divide by the molar mass 138 g mol-1

2.0841/138 = 0.01510217 = 0.015 mol

User CodingBarfield
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