2. At what temperature would 2.10 moles of N2 gas have a pressure of 1.25 atm and in a 25L tank? (Answer = 181 K)

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?

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

All of the following are part of the biosphere except