Given the reaction at equilibrium : H 2 (g)+I 2 (g)+53.0kj <-> 2Hl(g) The equilibrium will shift to the right if there's an increase in

We can see that heat is added on the left side of the reaction, which means that the reaction required heat to take place and is endothermic

because the reaction is endothermic, (absorbs heat to proceed), more heat will shift it towards the product side

because there is an equal number of gaseous moles on both the sides, a change in pressure or volume won't affect the equilibrium

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.