In the following reaction: 4 Al + 3 O2 - > 2 Al2O3 How many moles of aluminum would be needed to completely react with 90 grams of O2?

Question

Chemistry

Elliot Adkins

3 April, 04:48

In the following reaction: 4 Al + 3 O2 - > 2 Al2O3 How many moles of aluminum would be needed to completely react with 90 grams of O2?

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Answers (1)

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Zechariah · Answer 1

molar ratio = 4:3

since al moles needed so we will leave al in moles and convert o into grams

4: since 1 mole of oxygen is 16g so 3 moles is 48

4:48

put given data

x:90

90*4/48

7.5 moles