Which equation Best obeys the law of conservation of mass? a) N2 + 3H2 —> 2NH3
b) H2 + O2 —> 2H20
c) 2Ag20 —> Ag2 + O2
d) N2 + H2 —> NH3

N₂   + 3H₂  →  2NH₃

Explanation:

To obey the law of conservation of mass, the number of atoms on both sides of the expression, must be the same.

According to the law of conservation of mass "in a chemical reaction, matter is neither created nor destroyed but changed from one form to another".

To express this in chemical reaction, the number of atoms must be the same in going from reactants to products.

                      N₂   + 3H₂  →  2NH₃

We have 2 atoms of Nitrogen on both sides of the expression.

Also, we have 6 atoms of hydrogen on both sides.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

i think   the answer is c hope i'm right