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How many atoms are in 3.50 moles of calcium (Ca)?
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2 votes
How many atoms are in 3.50 moles of calcium (Ca)?

User DDsix
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there are always 6.02214 x 10^23 (Avogadros number) atoms in a mole. so times this by 3.5
User Jomin V George
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5 votes
1 mole of Ca has an Avogadro Number of atoms in it. = 6.02 × 10²³

3.5 moles would then have: 3.5 × (6.02 × 10²³)

= 3.5 × 6.02 × 10²³ = 21.07× 10²³

= 2.107×10²⁴ atoms.
User Ehartwell
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7.3k points
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