Question

A substance X contains 10 gram of calcium carbonate calculate the number of mole of calcium carbonate present in X ​

Answer 1

no of the moles calcium carbonate is 0.01

Answer 2

`\LARGE{ \boxed{ \rm{ \red{Required \: answer}}}}`

☃️ Chemical formulae ➝
`\sf{CaCO_3}`

How to find?

For solving this question, We need to know how to find moles of solution or any substance if a certain weight is given.

`\boxed{ \sf{No. \: of \: moles = (given \: weight)/(molecular \: weight) }}`

Solution:

Atomic weight of elements:

Ca = 40

C = 12

O = 16

❍ Molecular weight of
`\sf{CaCO_3}`

= 40 + 12 + 3 × 16

= 52 + 48

= 100 g/mol

❍ Given weight: 10 g

Then, no. of moles,

⇛ No. of moles = 10 g / 100 g mol‐¹

⇛ No. of moles = 0.1 moles

☄ No. of moles of Calcium carbonate in that substance = 0.1 moles

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