Noble gas notation for the following atom:
V

Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

What happens to isotopes that are unstable?

Which are forms of frozen water? check all that apply. dew frost hail rain sleet