5. One liter is equal to

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?

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

How many atoms are there in 5.70 mol of mg