Question

How many grams of magnesium will have the same number of atoms as 6 grams of carbon ? (Mg = 24 u ; C = 12 u)

Answer 1

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Answer 2

Explanation:

Given,

Mass of carbon = 6 gm

Molar mass of carbon = 12 gm

No. of moles of carbon = Given mass of element/ Molar mass of element = $\frac{6}{12}$ gm = 0.5 moles

Equal number of moles of all the substances contain equal number of molecules.

So, 0.5 moles of carbon and 0.5 moles of magnesium contains same no. of molecules.

Hence, mass of 0.5 mole of magnesium = $0.5\times24$ gm = 12 gm