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givi [52]
3 years ago
10

In an experiment to determine how to make sulfur trioxide, a chemist combines 32.0 g of sulfur with 50.0 g of oxygen. She finds

that she has made 80.0 g of sulfur trioxide and has 2.0 g of oxygen leftover in the end. How would this chemist make 100.0 g of sulfur trioxide so that she has no leftover sulfur or oxygen?
Chemistry
1 answer:
LuckyWell [14K]3 years ago
4 0

Answer:

The chemist needs to react 40 g of sulfur with 60 g of oxygen to make 100 g of sulfur trioxide.

Explanation:

2S (s) + 3O₂ (g) → 2SO₃ (g)

64g    + 96g     →  160 g

32g    + 48g     →   80 g

   x     +     y      →  100 g

   

1 mol SO₃ ___ 80g

     n _______ 100g

         n = 1.25 mol SO₃

1 mol S ___ 32 g

1,25 mol S __ 40 g

1 mol O₂ ___ 32 g

1,875 mol O₂ ___ 60 g

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