Question

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

Answer 1

Answer:

14.7 g

Step-by-step explanation:

let the weight of copper = x grams

then, 4.5:3.5 :: 18.9:x

Product of extremes = product of means

4.5×x = 3.5 × 18.9

= x= 66.15/4.5 = 14.7 g ans.