One litre of oxygen at STP is made to react with three litres of carbon monoxide at STP. Calculate the mass of each substance found after the reaction. Which one is the limiting reactant?

Explanation

To solve the problem step by step, we will first write the balanced chemical equation for the reaction between carbon monoxide (CO) and oxygen (O2), then determine the amounts of products formed and the limiting reactant.

### Step 1: Write the Balanced Chemical Equation
The reaction between carbon monoxide and oxygen can be represented as:
\[ 2 \text{CO} + \text{O}_2 \rightarrow 2 \text{CO}_2 \]

### Step 2: Determine Moles of Reactants
At STP (Standard Temperature and Pressure), 1 mole of any gas occupies 22.4 liters.
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