The moles of methane required to produce of water after complete combustion is . [nearest integer]

Question

The moles of methane required to produce  of water after complete combustion is  . [nearest integer]

Canvas Classes · Accepted Answer

Strategy:
 Use the balanced chemical equation for the combustion of methane to find the stoichiometric relationship between methane and water. Then, convert the given mass of water to moles to determine the required moles of methane.

Step 1: Write the balanced combustion equation

From the equation, 1 mole of  produces 2 moles of .

Step 2: Calculate moles of water produced
Molar mass of .

Step 3: Calculate moles of methane required
Using the  ratio:

In terms of :

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