객관식
One mole (mol) of glucose (molecular mass = 180 daltons) is:
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2. Atoms & Elements
Mole Concept
Multiple Choice
Given that the molar mass of RbF is 104.5 g/mol, how many moles of RbF are present in 57.0 grams of RbF?
A
1.83 mol
B
0.546 mol
C
0.546 g
D
1.83 g
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검증된 단계별 안내1
Identify the given information: the mass of RbF is 57.0 grams and the molar mass of RbF is 104.5 g/mol.
Recall the formula to calculate moles from mass and molar mass: \(\text{moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}}\).
Substitute the given values into the formula: \(\text{moles} = \frac{57.0}{104.5}\).
Perform the division to find the number of moles of RbF present in 57.0 grams.
Interpret the result as the amount of substance in moles corresponding to the given mass of RbF.
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