Question

(a)Calculate the mass of the following:

(i) 1 mole of N2 gas. (ii) 2.5 mole of oxygen atom.​

Answer 1

1. the mass of mole of nitrogen atoms is 14g

2.oxygen's atomic weight is 16.00amu 1 mole of oxygen is 6.02x 1023 atoms of oxygen 1 amu= 1.661x10- 24g

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