To make 44.0 grams of carbon dioxide, you must combine 12.0 g of carbon with 32.0 g of oxygen. if a chemist combines 120.0 g of carbon with 160.0 g of oxygen, how many grams of carbon dioxide will be made? if a substance is left over, indicate whether it is carbon or oxygen, and also determine how many grams of it are left over.

220 g of carbon dioxide will be made and 60 g of carbon will be left over

Explanation:

The ratio of the amount of carbon to that of oxygen to make carbon dioxode is given by

12/32 = 3/8

That is, we need 3 grams of carbon per 8 grams of oxygen to create 11 grams of carbon dioxide.

If we have 120 g of carbon we will need :

120 *(8/3) g = 320 g

of oxygen to produce 440 g of carbon dioxide.

However we only have 160 g of oxygen.

Now let us consider how many grams of carbon we need to be combined with 160 g of oxygen:

160 *(3/8)=60g

60 of carbon, will be used to create 220 g of carbon dioxide

Therefore, 220 g of carbon dioxide will be made and 60 g of carbon will be left over

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