Problem PageQuestion Acetylene gas is often used in welding torches because of the very high heat produced when it reacts with oxygen gas, producing carbon dioxide gas and water vapor. Calculate the moles of acetylene needed to produce 2.00 mol of water. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.

The amount of acetylene gas needed in the reaction is 2.00 moles

Explanation:

We are given:

Moles of water = 2.00 moles

The chemical equation for the reaction of acetylene with oxygen gas follows:

By Stoichiometry of the reaction:

2 moles of water is produced by 2 moles of acetylene gas

So, 2.00 moles of water will be produced by = of acetylene gas

Hence, the amount of acetylene gas needed in the reaction is 2.00 moles

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