For the reaction 2nh3(g)↽−−⇀ 3h2(g)+n2(g) the equilibrium concentrations were found to be [nh3]=0.250 m , [h2]=0.500 m , and [n2]=0.800 m . what is the equilibrium constant for this reaction?

The equilibrium constant for this reaction is 1.6

Explanation:

The chemical equation for the decomposition of ammonia follows:

The expression for equilibrium constant is given as:

We are given:

Putting values in above equation, we get:

Hence, the equilibrium constant for this reaction is 1.6

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

the answers would be

the first one and the second one