Question
How many moles of calcium (Ca) atoms are in $77.4 \mathrm{~g}$ of $\mathrm{Ca} ?$
Step 1
From the periodic table, the molar mass of Ca is approximately 40.08 g/mol. Now, we can use the given mass of calcium (77.4 g) and the molar mass of calcium (40.08 g/mol) to find the number of moles of calcium: Number of moles = (mass of calcium) / (molar mass Show more…
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