객관식
How many moles of carbon atoms are present in 1.22 moles of C6H12O6?
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2. Atoms & Elements
Mole Concept
Multiple Choice
How many moles are present in 25.5 g of silver (Ag)? (Molar mass of Ag = 107.9 g/mol)
A
0.236 mol
B
2.55 mol
C
4.23 mol
D
0.424 mol
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검증된 단계별 안내1
Identify the given information: mass of silver (Ag) is 25.5 g, and the molar mass of silver is 107.9 g/mol.
Recall the formula to calculate moles from mass: \(\text{moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}}\).
Substitute the given values into the formula: \(\text{moles} = \frac{25.5}{107.9}\).
Perform the division to find the number of moles of silver present.
Interpret the result as the amount of substance in moles corresponding to the given mass of silver.
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