A0.907 mole sample of ideal gas at 12c occupies a volume of 4.25l. what is the pressure of gas?

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?

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Which fact represents evidence for the big bang theory?