QQuestionChemistry
QuestionChemistry
What mass of C₁₇H₁₄O was isolated? Choose the closest answer.
- ☐ 4.44 g
- ☐ 4.69 g
- ☐ 3.35 g
- ☐ 2.22 g
- ☐ 2.35 g
- ☐ 7.01 g
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Answer
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Step 1:: First, we need to find the molar mass of C₁₇H₁₄O.
\text{Molar mass} = (17 \times 12.01 \text{ g/mol}) + (14 \times 1.01 \text{ g/mol}) + (16.00 \text{ g/mol})
The molar mass is the sum of the molar masses of each atom in the molecule. The molar mass of carbon (C) is approximately 12.01 g/mol, hydrogen (H) is approximately 1.01 g/mol, and oxygen (O) is approximately 16.00 g/mol. Therefore, the molar mass of C₁₇H₁₄O is:
Step 2:: Calculate the molar mass:
\text{Molar mass} = (204.17 \text{ g/mol}) + (14.14 \text{ g/mol}) + (16.00 \text{ g/mol}) = 234.31 \text{ g/mol}
Step 3:: The problem states that 0.0100 mol of C₁₇H₁₄O was isolated.
\text{Mass} = \text{Number of moles} \times \text{Molar mass}
To find the mass of the isolated sample, multiply the number of moles by the molar mass:
Step 4:: Calculate the mass:
\text{Mass} = 0.0100 \text{ mol} \times 234.31 \text{ g/mol} = 2.3431 \text{ g}
Step 5:: Compare the calculated mass to the given answer choices.
The closest answer is 2.35 g.
Final Answer
2.35 g of C₁₇H₁₄O was isolated.
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