An element P combines with another element Q in the weight ratio 1: 5. If 15 g of P is made to react with 62g of Q to a compound. What will be the total weight of the new compound formed?
(A) 60 g
(B) 77 g
(C) 74.4 g
(D) 74 g
(E) 66 g

74.4 grams of the new compound will be formed.

The weight ratio at which the two elements P and Q combines is 1:5. So for every 1 gram of P there is 5 grams of Q.

Here we are supplied with 15 grams of P. So Q needed for 15 grams of P is 75 grams which we don't have.

We are given with 62 grams of Q. So P needed for that amount of Q is 12.4 grams.

Thus the compound will weigh grams which will give us with 74.4 grams of compound.

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