00:01
To know how many grams of aluminum oxide are produced, we first need a balanced chemical reaction, which is provided 4 moles of aluminum solid, react with 3 moles of oxygen gas, to produce 2 moles of aluminum oxide.
00:21
So if we start with 45 grams of aluminum and more than enough oxygen, we can calculate the mass of aluminum oxide that would be produced, by first converting the grams of aluminum into moles of aluminum.
00:41
One mole of aluminum going to the periodic table has a mass of 26 .982 grams.
00:52
Then from the balanced chemical reaction we see that four moles of aluminum are required to make two moles of aluminum oxide.
01:04
Now knowing the moles of aluminum oxide, we can convert that into gramming, aluminum oxide using the molar mass of aluminum oxide.
01:16
The molar mass of aluminum oxide is going to be the mass of two moles of aluminum and three moles of oxygen, which gives us 101 .96...