객관식
What is the mass of sodium (Na) in grams present in 7.5 grams of sodium benzoate (NaC7H5O2)?
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2. Atoms & Elements
Calculating Molar Mass
객관식
Calculate the mass, in grams, of 0.105 moles of sucrose (C12H22O11), given that the molar mass of sucrose is approximately 342.3 g/mol.
A
35.9 grams
B
3.59 grams
C
0.359 grams
D
359 grams
검증된 단계별 안내1
Identify the given information: you have 0.105 moles of sucrose (C12H22O11) and the molar mass of sucrose is approximately 342.3 g/mol.
Understand the relationship between moles, molar mass, and mass. The formula to calculate mass from moles is: \( \text{mass (g)} = \text{moles} \times \text{molar mass (g/mol)} \).
Substitute the given values into the formula: \( \text{mass (g)} = 0.105 \text{ moles} \times 342.3 \text{ g/mol} \).
Perform the multiplication to find the mass in grams. This will give you the mass of sucrose corresponding to 0.105 moles.
Review the calculated mass and compare it with the provided options to determine the correct answer.
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