text: rank the following samples in number of molecules, from least to greatest? a) 1 mole of ch4 b) 27 g of h2o c) 34 g of nh3 d) 22 g of co2 for some reason, there seems to be confusion on this question. my answers, in short are d < a < b < c. here is my explanation:  a) a mole is a mole, which equals to 6.02 x 10^23 molecules (no calculations needed here)  b) 27g h2o * (6.02 x 10^23 molecules/ 18g h2o) = 9.03 x 10^23 --- here you can estimate...pull out a nine, leaving three-halves times 6.02 and tack on the exponential  c) 34g nh3 * (6.02 x 10^23 molecules/ 17g nh3) = 12.04 x 10^23 molecules  d) 22g co2 (6.02 x 10^23 molecules/ 44g co2) = 3.01 x 10^23 molecules