Question

How many molecules of NO2 are produced when 2.0 × 1020 molecules of N2O4 are decomposed according to the following equation? N2O4(g) → 2NO2(g)

2.0 × 1020

1.0 × 1020

4

4.0 × 1020

Answer 1

Answer is: D/ 4.0 x 10^20

Hope this helps!

Answer 2

Answer:-
`4.0*10^2^0` molecules.

Solution:- The given balanced equation is:

`N_2O_4(g)\rightarrow 2NO_2(g)`

From the balanced equation, 1 molecule of the reactant gives two molecules of the product. So, the number of molecules of the products formed will be two times the molecules of the reactant.

`2.0*10^2^0moleculesN_2O_4((2moleculesNO_2)/(1moleculeN_2O_4))`

=
`4.0*10^2^0moleculesNO_2`

So, the last choice is the correct one.