Calculate the no. of each atoms presents in 10 grams of calcium carbonate.

asked Feb 9, 2022 1.1k views

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by Katty

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Molar Mass of Calcium carbonate:-

$\\ \sf\longmapsto CaCO_3$

$\\ \sf\longmapsto 40u+12u+3(16u)$

$\\ \sf\longmapsto 52u+48u$

$\\ \sf\longmapsto 100u$

$\\ \sf\longmapsto 100g/mol$

$\boxed{\sf No\:of\;moles=(Given\:Mass)/(Molar\:Mass)}$

$\\ \sf\longmapsto No\:of\;moles=(10)/(100)$

$\\ \sf\longmapsto No\:of\:moles=0.1mol$

Now

$\boxed{\sf No\:of\:molecules=No\;of\:moles* Avagadro\: No}$

$\\ \sf\longmapsto 0.1* 6.023* 10^(23)$

$\\ \sf\longmapsto 6.023* 10^(22)molecules$

Syclonefx answered Feb 14, 2022

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