What is the electron configuration of the chloride ion?

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 when an acid dissolves?

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same