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24-03-2020
Chemistry

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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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umairwaheed8888776 umairwaheed8888776

24-03-2020

Answer:

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

Explanation:

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