Question

8. 4.5 g of an alloy of copper and zinc contains 3.5 g of copper What weight of copper will there be in 18.9g of the alloy?​

Answer 1

Answer:

1) 4.5 grams of alloy gives 3.5 grams of copper.

Then,

2) Let 18.9 grams of alloy gives y grams of copper.

Let, required weight beY.

Y = (18.9×3.5)÷(4.5)

Y = 14.7 grams....

So,

Required weight of copper is 14.7 grams.