Question

QUESTION 16.1 POINT How many nitrogen molecules are generated when 7.1 moles of ammonia react, according to the following equation? 3PbO+ 2NH3 3Pb + N2 + 3H2O Select the correct answer below: O 8.6 x 10 O 4.3 X 1024 O 85 x 102 O 2.1 x 1024

Answer 1

Solution :

The correct option is IV.

Calculation :

From the given reaction, it can be noted that 2 mol of NH3 produces 1 mol of N2.

Thus,

7.1 mol NH3 will produces = 7.1 mol x 1/2 = 3.55 mol N2

Since, 1 mol N2 = 6.023 x 10^23 molecule

Hence, 3.55 mol N2 = 3.55 x 6.023 x 10^23 molecules

= 2.14 x 10^24 molecule

= 2.1 x 10^24 molecule