The following chemical equation is not balanced: i2 + na2s2o3 nai + na2s4o6 when this chemical equation is correctly balanced, what is the coefficient of the nai molecule? a. 1 b. 2 c. 3 d. 4

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

is there multiple choice answers?

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !