The reaction below is at dynamic equilibrium. mc004-1.jpg which statement is true for the equilibrium system? the concentration of nh3 is greater than the concentration of n2. the concentration of nh3 equals the concentration of n2. the rate of the forward reaction equals the rate of the reverse reaction. the rate of the forward reaction is greater than the rate of the reverse reaction.

The correct statement is :

'The rate of the forward reaction equals the rate of the reverse reaction'.

Explanation:

Dynamic Equilibrium : A chemical reaction is said to be in equilibrium if the concentration of reactant and products become constant. The rate of the reaction going forward is equal to the rate of reaction going backward. Hence, reversible reaction.

Only rates of the backward and forward reaction are equal not the the concentrations.

According to the given reaction:

Rate of the decomposition of ammonia is equal to the rate of formation of ammonia from hydrogen gas and nitrogen gas.

From the given statements the correct statement is:'

The rate of the forward reaction equals the rate of the reverse reaction'.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied