Oran uses a ball, a bar magnet, and a compass to create a model of earth’s magnetic field. how could he best use these materials? he could glue the compass to the ball so the needle points to the top of the ball, and move the bar magnet to show how the compass direction changes. he could glue the compass to the ball so the needle points to the bottom of the ball, and move the bar magnet to show how the compass direction changes. he could place the bar magnet in the ball so that the north pole of the magnet is at the top of the ball and the compass needle points to it. he could place the bar magnet in the ball so that the south pole of the magnet is at the top of the ball and the compass needle points to it.

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%

a. they are both space stations

happy to

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b. is the answer hoped i