signmentProblemID-97605805 K4 of 10> Correct Significant Figures Feedback: Your
ID: 1029649 • Letter: S
Question
signmentProblemID-97605805 K4 of 10> Correct Significant Figures Feedback: Your answer 141.944was elther rounded differently or used a different number of significant fiqures than required for this part mol Hint 2. Convert the theoretical yield to grams Convert 1.40 mol P20s to grams Express your answer to three significant figures and include the appropriate units View Available Hint(s Valie mol Submit Previous Answers Incorrect: Try Again; 5 attempts remaining Enter your answer using dimensions of mass X Hint 3. Calculate the percent yield for an example (click to open)Explanation / Answer
Answer:
Given moles of P2O5=1.40 mol,
Molar mass of P=30.973 g/mol, O=15.999 g/mol
Molar mass of P2O5=(2x30.973 g/mol)+(5x15.999 g/mol)
=141.944 g/mol.
We know that number of moles=mass/molar mass
Mass of P2O5=moles X molar mass
=1.40 mol X 141.944 g/mol=198.72 g.
The mass of 1.40 mol of P2O5=198.72 g.
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