Sodium chloride can be formed by the reaction of sodium metal and chlorine gas. If 45.98g of sodium combines with an excess of chlorine gas to form 116.89g sodium chloride, what mass of chlorine gas is used in the reaction?

Ibelieve the answer is relative humidity  because it makes more sense that way. solar flares usually occur in space it doesn't affect the earth, well it could but it wont make a significant damage.  latitude is land it doesnt do anything. prevailing winds, i dont know the correct meaning for this but i doubt that affects the land so it has to be relative humidity.