Substances A and B react in a ratio of A + B → AB. Colin was combining substance A and substance B to form substance AB. He added 10 g of substance A and 45 g of substance B.

Question

Substances A and B react in a ratio of A + B → AB. Colin was combining substance A and substance B to form substance AB. He added 10 g of substance A and 45 g of substance B.

How much of substance AB would Colin make?

10 g
35 g
45 g
55 g

Answer 1

55 g

Since the ratio of A to B is 1:1, the reaction will use up all of substance A and substance B to form substance AB. Therefore, Colin will make 55 g of substance AB (10 g + 45 g).