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andreyandreev [35.5K]
2 years ago
9

Calculate the molality (m) of solution containing 20.5 g of ethylene glycol C,H,O,

Chemistry
1 answer:
Svetllana [295]2 years ago
5 0

Answer:

Given

mass of solute (m) =20.5g

mass of solvent( ms) =155g

solution

malality =mX1000/mrxms

M=20.5x1000/62x155

M=2.1332

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<u>Answer:</u> The moles of water produced are 1.54 moles.

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

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Given mass of ethane = 15.42 g

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Putting values in above equation, we get:

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The chemical equation for the combustion of ethane follows:

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By Stoichiometry of the reaction:

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So, 0.513 moles of ethane will produce = \frac{6}{2}\times 0.513=1.54mol of water

Hence, the moles of water produced are 1.54 moles.

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