What happen when you add 2 in front of C2H402

2C2H402 is the answer of this

A coefficient multiplies the number of atoms of each element indicated in a chemical formula. Thus, 2H2O represents four H atoms and two O atoms. ... side to four by placing the coefficient 2 in front of the molecular formula for oxygen

Explanation:

i would say b

explanation:

but i think i would need more information than that

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >