| The next question asks, "How much magnesium oxide could be made from
30.0 g of magnesium?" |
| How much magnesium oxide could be made from 30.0 g of magnesium? |
|
| Put down magnesium oxide with a question mark. |
|
|
|
= ? MgO |
| We write down 30.0 g of magnesium as a starting point. |
30.0 g Mg |
|
|
= ? MgO |
| Then we need a conversion factor that will change from grams of magnesium
(on the bottom) to grams of magnesium oxide (on the top). |
30.0 g Mg |
x |
g MgO
g Mg |
= ? MgO |
| Go back to the previous example to get the relationship between magnesium
and magnesium oxide, and we get 48.6 g for magnesium (on the bottom), and 80.6 g for
magnesium oxide (on the top). |
30.0 g Mg |
x |
80.6 g MgO
48.6 g Mg |
= ? MgO |
| That comes out to be 49.8 g of magnesium oxide. |
30.0 g Mg |
x |
80.6 g MgO
48.6 g Mg |
= 49.8 g MgO |
