Three skateboarders take three different paths to the top of the half-pipe to start skateboarding at position 1. The skateboarders are all the same
height and weight. Which skateboarder will have the greatest amount of
gravitational potential energy?
A-The skateboarder who took the stairs.
B-The skateboarder who skateboarded up the half-pipe.
C-The skateboarder who walked up the half-pipe.
D-The gravitational potential energy is the same for all of the
skateboarders.

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 !

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

i don,t know so just answer mine