The atomic masses of 35Cl (75.53 percent) and 37Cl 17 17 (24.47 percent) are 34.968 amu and 36.956 amu, re- spectively. Calculate the average atomic mass of chlorine. The percentages in parentheses denote the relative abundances.

How does a sample of helium at 15 degree celsius compare to a sample of helium at 215 k? a) the helium at 15 degrees celsius has a higher average kinetic energy that the sample at 215 k. b) the helium at 15 degrees celsius has lower nuclear energy that the sample at 215 k. c) the helium at 15 degrees celsius has slower- moving atoms that the sample at 215 k. d) the helium at 15 degrees celsius has smaller atoms than the sample at 215 k.