# If 15 g of #C_2H_6# react with 45 g of #O_2#, how many grams of water will be produced?

##### 1 Answer

#### Explanation:

Let's write the chemical equation for this combustion reaction:

Since we're given the amounts of more than one reactant, we must determine which one is limiting by using their molar masses to convert to moles, and then dividing that number by the coefficient in the equation:

Since

Now, we'll use the stoichiometric relationships (the coefficients) to find the moles of