Question

Calculate the mass of 6.022×10²⁴ molecules of N2​

Answer 1

Answer:

28 g .

Explanation:

6.022 × 10^24 molecules = 1 mole of N2 gas .

So mass of 1 mole of N2 gas = (14 × 2)g = 28 g .

Answer 2

Explanation:

The molar mass of the element nitrogen is 14.0 g/mol

. In order to determine the molar mass of nitrogen gas

(N2)

, multiply the molar mass of the element nitrogen with 2

so , Molar mass of nitrogen gas (N2)

=14.0g/mol×2 =28.0 g/mol

6.022×10²⁴ molecules of N2 = 10 × 6.022×10²³= 10 mol

so ,

mass of 10 mol N2= 28× 10= 280 g

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