Draw the Lewis structure for ammonia, NH3. Include lone pairs. In the Lewis structure:. 1) Nitrogen has a lone pair of electrons.
2) Nitrogen has three bonding pairs of electrons.
3) Each hydrogen has a bonding pair of electrons.
4) All of the above.

4) All of the above.

Explanation:

Hello,

In this case, considering the attached picture wherein the Lewis dot structure is drawn, we realize that the nitrogen has a lone par of electrons, whereas the other three valence electrons are bonded with the three hydrogen atoms in order to obey the octet rule and form three bonding pairs for nitrogen and one bonding pair per hydrogen. Therefore, answer is 4) All of the above.

Regards.

here we have to get the change of moles on decrease the volume of the reaction in gas phase.

the   per the given options it will decrease by (d) 11-50%

we know, on decreasing the volume of the gas phase reaction the reaction moves to the product side.

the reaction:                     so₂cl₂ (g) = so₂ (g) + cl₂ (g)         total

the moles at equilibrium:   1 - α                 α               α           = 1+α

concentrations:                   1 - α               α               α           = 1 + α

(concentration = moles/volume, as volume is 1 l)

(where α is the degree of dissociation)

now the dissociation constant in terms of concentration is :

=  

or,

or,   = (at v = 1l)

the reaction:                     so₂cl₂ (g) = so₂ (g) + cl₂ (g)         total

the moles at equilibrium:   1 - α                 α               α           = 1+α

concentrations:               (1 - α)/0.5           α/0.5         α/0.5       = (1 + α)/0.5

thus, the dissociation constant in terms of concentration is :

or,  

=  

so, the change of 1 : 1/0.5

or, 1: 2

thus it will decrease by 50%.

or, as per the given options it will decrease by 11-50%

coral.

explanation:

coral. many marine organisms that produce calcium carbonate shells or skeletons are negatively impacted by increasing co2 levels and decreasing ph in seawater.