+12 One hydrogen molecule has a mass of 2.016 amu. How many hydrogen molecules would there be in a pound of hydrogen?
+36916 1 pound = 453.592.37 gm
453 .59237 / 2.016 = 224.996 =~~225 moles ( = 225 x 6.022 x 10^23 molecules = 1.355 x 10^26 molecules)
