8
practice testMultiple Choice

Practice Test

Question 8 • Chemistry

The equation represents the combustion of sucrose. cap c sub 12 cap h sub 22 cap o sub 11 plus 12 cap o sub 2 rightarrow 12 CO sub 2 plus 11 cap h sub 2 cap o If there are 10 point 0 g of sucrose and 8 point 0 g of oxygen, how many moles of sucrose are available for this reaction?

Answer
A
3 point 0 0 mol
B
0 point 0 2 9 mol
C
0 point 2 5 0 mol
D
0 point 3 5 1 mol

Explanation

Find the amount of sucrose from its mass and molar mass. Sucrose, C₁₂H₂₂O₁₁, has a molar mass of about 342 g/mol, so 10.0 g ÷ 342 g/mol = 0.0292 mol, which rounds to 0.029 mol. Therefore, the correct choice is A, 0.029 mol.

AI-written and checked against the verified answer.

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