The law of conservation of mass says that * O mass before a reaction is the same as the mass after a reaction
O mass before a reaction is more than mass after a reaction
mass before a reaction is less than mass after a reaction
mass is destroyed
WHICH ONE SHOULD I CHOOSE ‼️

There are main groups in the modern periodic table of elements

What is the lowest number energy level where a d sublevel is found

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.