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3 years ago

How many atoms are in 52.3 g of calcium ?

Chemistry

1 answer:

olya-2409 [2.1K]3 years ago

8 0

Explanation:

one mole contains Avogadro number of particles

So,

40g( the atomic mass) contains 6.023× 10^23 atoms.

so 1 g contains 40÷(6.023×10^23)

so, 52.3 g contains (40×52.3) ÷6.023×10^23

= 3.47× 10^-21

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tigry1 [53]

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Ahat [919]

Answer:

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Explanation:

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The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{8.70\ g}{39.997\ g/mol}$

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The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{100\ g}{18.0153\ g/mol}$

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