Astudent was conducting an experiment designed to study the law of conservation of mass. the student measured the mass of all the materials involved in the closed system reaction. the mass equaled 562g. what would we expect the mass to be after the reaction had occured?

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

it's c (engineer's do their work with mechanical stuff not on any living being)