An initial sample of 502 g of a radioactive substance decays according to the function A ( t ) = 502 e − 0.033 t where t is given in years. (a) How many grams of the substance will remain after 68 years? Round your answer to one decimal place.

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

the answer is option a.

the answer is c

tell me if wrong