| The next question asks "How much oxygen would it take to make 50.0 g
of magnesium oxide?" |
| How much oxygen would it take to make 50.0 g of magnesium oxide? |
|
| Again we are trying to find out how much oxygen. |
|
|
|
= ? O2 |
| Our starting point for the calculation is 50.0 g of magnesium oxide. |
50.0 g MgO |
|
|
= ? O2 |
| The conversion factor we need has grams of magnesium oxide on the bottom
and grams of oxygen on the top. |
50.0 g MgO |
x |
g O2
g Mg |
= ? O2 |
| The numbers based on the balanced equation are 32.0 g for oxygen and 80.6
g for magnesium oxide. |
50.0 g MgO |
x |
32.0 g O2
80.6 g MgO |
= ? O2 |
| Then carry out the calculation to get the answer, 19.9 g of oxygen. |
50.0 g MgO |
x |
32.0 g O2
80.6 g MgO |
= 19.9 g O2 |
