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Part 1
In a certain​ chemical, the ratio of zinc to copper is 4 to 11. A jar of the chemical contains 231 grams of copper. How many grams of zinc does it​ contain?

Respuesta :

sqdancefan

Answer:

  84 g

Step-by-step explanation:

You want the mass of zinc in a chemical containing 231 g of copper if the ratio of zinc to copper is 4 to 11.

Proportion

The given proportion is ...

  Zn/Cu = 4/11 = Zn/(231 g)

Multiplying by 231 g, we find ...

  Zn = (231 g)(4/11) = 84 g

The chemical contains 84 g of zinc.

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