The atomic number of the atom which does not usually form compounds is: 16 17 18 19 20

What must happen before a body cell can begin mitotic cell division

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.