Question

how is it possible to 10grams of mg and 5g of carbon contain same number of atoms
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Answer 1

Explanation:

l mole of MG = 24 g = 6.022*10^23 atoms

10 g = (10*6.022*10^23)/24

10g = 0.25*10^24

12g of carbon = 6.022*10^23 atoms

5g= (6.022*.10^23*5/12

5g = 2.5*6.022*.10^23

5g= 0.25*6.022*10^24

Hence proved..

Answer 2

Explanation:

10 g of Mg and 5 g of C have the same number of atoms because the molar mass of Mg and C are 24 and 12 respectively.  

Proof:

Number of atoms present

1) In 5 g of C = 6.022 × 10²³ × 5/12

                     = 2.50 × 10²³ number of atoms

2) In 10 g of Mg = 6.022 × 10²³ × 10/24

                         = 2.50 × 10²³ number of atoms