If you were asked to convert 1.3 mol al to atoms, which of the following should you use for the conversion?

a.) 6.022 * 10^23 atoms al/13.0 mol al
b.) 6.022 * 10^23 atoms al/1 mol al
c.) 26.981 atoms al/1 mol al
d.) 13.0 atoms al/1 mol al

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.