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How many moles of calcium (Ca) are present in a 425 g sample of calcium?
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2. Atoms & Elements
Calculating Molar Mass
Scelta multipla
What is the mass of 3.50 mol of Zn atoms?
A
65.4 g
B
229 g
C
114 g
D
3.50 g
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Guida verificata passo dopo passo1
Identify the given quantity: 3.50 moles of Zn atoms.
Recall that the molar mass of zinc (Zn) is approximately 65.4 g/mol. This value represents the mass of one mole of Zn atoms.
Use the formula to convert moles to mass: \(\text{mass} = \text{moles} \times \text{molar mass}\).
Substitute the known values into the formula: \(\text{mass} = 3.50\ \text{mol} \times 65.4\ \text{g/mol}\).
Multiply the numbers to find the mass of 3.50 moles of Zn atoms (do not calculate the final value here, just set up the expression).
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