# A chemistry problem by jaikirat sandhu

Chemistry Level 3

A 20 ml mixture of $$\ce{CO}$$ and $$\ce{H2}$$ is reacted with excess oxygen at 300 K and 1 atm. The mixture exploded and is cooled. There was a volume contraction of 18 ml. If the volume ratio of $$\ce{CO}$$ and $$\ce{H2}$$ in the original mixture was $$\frac{a}{b},$$ where $$a$$ and $$b$$ are coprime integers, what is the value of $$a+b?$$

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