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.

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.