Final answer:
Colin would make 50 g of substance AB.
Step-by-step explanation:
In a combination reaction, substances A and B react to form substance AB. The ratio of A to B in the reaction is 1:4. Colin added 10 g of substance A and 45 g of substance B. To determine how much of substance AB Colin would make, we need to find the limiting reactant.
To find the limiting reactant, we compare the amounts of A and B in the reaction to their stoichiometric ratio. Based on the stoichiometric ratio, for every 1 g of A, we need 4 g of B. Therefore, if we have 10 g of A, we would need 40 g of B. Since Colin only has 45 g of B, we can conclude that B is the limiting reactant.
When B is the limiting reactant, we can calculate the amount of AB produced by using the stoichiometric ratio. For every 1 g of A, 4 g of B are required to produce 5 g of AB. Therefore, for 10 g of A, we would produce 50 g of AB.