Question

the no. of moles in 11 gm of nitrogen gas is _____ ( 0,39,0,49, 0,29) [atomic mass of N =14]​

Answer 1

Answer:

$0.39$

Explanation:

$mole \: (n) = \frac{mass}{gram \: atomic \: mass} \\ \\ \frac{11}{28} \\ \\ = 0.39$

Answer 2

Answer:

28 gm makes 1 mole as its atomic mass is 14 u and nitrogen gas contains 2 atoms so 14 × 2 = 28 u.

so 11 gm will make 11÷28 = 0.39 mole

Explanation: