# How many molecules of oxygen react with 20 molecules of propane?

##### 1 Answer

May 3, 2017

#### Answer:

#### Explanation:

**Balanced Equation**

The ratio of propane to oxygen is

**Calculate the number of molecules of oxygen that will react with 20 molecules with propane.**

Multiply the given number of molecules of propane by the ratio of propane and oxygen with oxygen in the numerator.