Homework Answers
2A ---------------------> 3B
moles of A = mass / molar mass
= 25.4 / 19.1
= 1.33
2 mol A----------------> 3 mol B
1.33 mol A------------ > 1.33 x 3 / 2 = 2.00 mol B
molecules of B = 2 x 6.023 x 10^23
= 1.20 x 10^24
molecules of B = 1.20 x 10^24
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