QuestionJuly 17, 2025

0.180 mol C_(2)H_(6) Express your answer using three significant figures.

0.180 mol C_(2)H_(6) Express your answer using three significant figures.
0.180 mol C_(2)H_(6) Express your answer using three significant figures.

Solution
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Answer

5.41 g Explanation 1. Calculate Molar Mass of C_{2}H_{6} Carbon (C) has a molar mass of 12.01 g/mol, and hydrogen (H) has a molar mass of 1.008 g/mol. For C_{2}H_{6}: 2 \times 12.01 + 6 \times 1.008 = 30.068 g/mol. 2. Calculate Mass Use the formula: **mass = moles × molar mass**. Thus, 0.180 \text{ mol} \times 30.068 \text{ g/mol} = 5.41224 \text{ g}.

Explanation

1. Calculate Molar Mass of $C_{2}H_{6}$<br /> Carbon ($C$) has a molar mass of 12.01 g/mol, and hydrogen ($H$) has a molar mass of 1.008 g/mol. For $C_{2}H_{6}$: $2 \times 12.01 + 6 \times 1.008 = 30.068$ g/mol.<br />2. Calculate Mass<br /> Use the formula: **mass = moles × molar mass**. Thus, $0.180 \text{ mol} \times 30.068 \text{ g/mol} = 5.41224 \text{ g}$.
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