Question

which has more number of atoms
a,hundred gram of Nitrogen
b, 100 gram of Ammonium

Answer 1

The molar mass of N₂ is 28 g/mol; that of O₂ is 32 g/mol. Therefore 10 g of N₂ is about 0.36 mol, and 10 g of O₂ is 0.31 mol.

A larger fraction of a mole = a larger number of molecules, since all moles contain the same number of molecules.

Answer 2

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⏩a. 100 gram of nitrogen
no. of atoms = given mass/molar mass × avogadro no.
x = 100/14 × 6.022×10^23
x = 42.99 × 10^23
no. of atoms = 4.29 × 10^22

⏩b. 100g of ammonium
no.of atoms = given mass/molar mass × avogadro no.
x = 100/17 × 6.022×10^23
x = 35.4 × 10^23
no. of atoms = 3.54 × 10^22

⏩So from the above calculation we get that 100g of nitrogen has more atoms than 100g of ammonium

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