In the following chemical reaction, which element is shown to be violating the law of conservation of mass? c3h8 + 4o2 -> 3co2 + 4h2o

a. c
b. h
c. o
d. none of the above; the equation is balanced.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates