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How many grams of aluminum oxide are produced according to the reaction below given that you start with 10.0 grams of Al and 19.0 grams of O2? Reaction 4Al + 3O2>>>2Al2O3

2007-04-27 20:12:10 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

2 answers

4Al + 3O2---------2Al2O3

108+96 ------ 204

108g of Al produces =204g of Al2O3

10g of Al will produce =204x10/108

= 18.89g of Al2O3

2007-04-27 20:43:04 · answer #1 · answered by Anonymous · 0⤊ 0⤋

1. work out the moles of Al
2. work out the moles of O2
3. select which is smaller
4. if it's 1, divide by 2 and multiply by the Mr of Al2O3
5. if it's 2, multiply by 2/3 and multiply by the Mr of Al2O3.

2007-04-28 03:39:45 · answer #2 · answered by Gervald F 7 · 0⤊ 0⤋