# Problem: In a chemical reaction, exactly 2 mol of substance A reacts to produce exactly 3 mol of substance B. How many molecules of substance B are produced when 28.3 g of substance A reacts? The molar mass of substance A is 26.5 g/mol.

###### FREE Expert Solution

We’re being asked to calculate how many molecules of substance B are produced when 28.3 g of substance A reacts

From the problem, the given reaction is: 2 mol of substance A reacts to produce exactly 3 mol of substance B

2 A → 3 B

We need to perform a mole-to-mole comparison between A and B.

85% (333 ratings) ###### Problem Details

In a chemical reaction, exactly 2 mol of substance A reacts to produce exactly 3 mol of substance B. How many molecules of substance B are produced when 28.3 g of substance A reacts? The molar mass of substance A is 26.5 g/mol.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Stoichiometry concept. You can view video lessons to learn Stoichiometry. Or if you need more Stoichiometry practice, you can also practice Stoichiometry practice problems.