QQuestionChemistry
QuestionChemistry
"A) How many moles of C^3H^8 (molar mass 44.09 g/mol) are represented by 5.01 g of this compound? Give your answer correctly to three significant digits.
B) How many C atoms are present in the sample of C^3H^8 with mass 5.01 g? Avogadro’s number is 6.022 × 1023. Enter your answer using scientific notation and to three significant digits."
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Answer
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Step 1:I'll solve this problem step by step, following the specified LaTeX formatting guidelines:
Step 2:: Calculate the number of moles of C^3H^8
- $$M$$ = molar mass of C3H8 (44.09 g/mol)
• Where:
Step 3:: Perform the mole calculation
• Rounding to three significant digits: $$n = 0.114 \mathrm{~mol}
• n = 0.1136 \mathrm{~mol}
Step 4:: Calculate the number of C atoms
• $$\mathrm{C~atoms} = 2.06 \times 10^{23} \mathrm{~atoms}
• Each molecule of C^3H^8 contains 3 carbon atoms • Number of C atoms = (moles) × (atoms per molecule) × (Avogadro's number)
Final Answer
A) 0.114 \mathrm{~mol} B) 2.06 \times 10^{23} \mathrm{~atoms}
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