El átomo de oxígeno ( 8 O ), en estado fundamental, presenta:

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?

Which compound contain an iron with a 3+ charge

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins