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27-09-2016
Chemistry

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Calculate the number of atoms in a 4.08 × 103 g sample of cesium.

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lola9879alol lola9879alol

27-09-2016

number of moles= mass/molar mass
=4.08/ 132.9= 0.031

number of atoms= number of moles x avogadros constant
=0.031 x 6.02 x 10^23
=1.87x10^22

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