how many atoms are there in 345 grams of Ca
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Answer:
5.18x 10^24 atoms
Explanation:
We're asked to calculate the number of atoms of
Ca
in
153 g Ca
What we must first do is convert the given mass of calcium to moles of calcium, using its molar mass
345/40.08=8.607
NA= 6.023x10^23
therefore
NA x 8.607=5.18x 10^24
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