QuestionJune 10, 2025

How many moles are there in 3.50 g of ethanol, CH_(3)CH_(2)OH 161 mol 0.00621 mol 13.1 mol 0.0761 mol

How many moles are there in 3.50 g of ethanol, CH_(3)CH_(2)OH 161 mol 0.00621 mol 13.1 mol 0.0761 mol
How many moles are there in 3.50 g of ethanol, CH_(3)CH_(2)OH 161 mol 0.00621 mol 13.1 mol 0.0761 mol

Solution
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Answer

0.0761 mol Explanation 1. Calculate Molar Mass of Ethanol Ethanol (CH_3CH_2OH) has a molar mass calculated as follows: C: 12.01 \times 2, H: 1.01 \times 6, O: 16.00 \times 1. Total = 46.08 \, g/mol. 2. Calculate Moles of Ethanol Use the formula **moles = \frac{mass}{molar \, mass}**. Substitute the values: \frac{3.50 \, g}{46.08 \, g/mol} = 0.076 \, mol.

Explanation

1. Calculate Molar Mass of Ethanol<br /> Ethanol ($CH_3CH_2OH$) has a molar mass calculated as follows: $C: 12.01 \times 2$, $H: 1.01 \times 6$, $O: 16.00 \times 1$. Total = $46.08 \, g/mol$.<br /><br />2. Calculate Moles of Ethanol<br /> Use the formula **moles = \frac{mass}{molar \, mass}**. Substitute the values: $\frac{3.50 \, g}{46.08 \, g/mol} = 0.076 \, mol$.
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