Final answer:
The mass of 0.0287 mol of sucrose with a molar weight of 342.30 g/mol is calculated to be 9.82 g after rounding to two decimal places, suggesting option (b) 9.84 g may be the closest correct answer.
Step-by-step explanation:
To calculate the mass of 0.0287 mol of sucrose with a molar weight of 342.30 g/mol, we use the formula: mass = number of moles × molar weight. Plugging in the values gives us: mass = 0.0287 mol × 342.30 g/mol = 9.81981 g. Rounding to two decimal places, the mass of sucrose is 9.82 g, which isn't an option provided. However, the closest answer to this calculation is (b) 9.84 g, which may indicate a rounding difference in the given choices.