I would expect silane because all the rest have an overall dipole movement
You should make a density trap, you get different liquids with different density's ( corn starch , water , alcohol , syrup) and pour them into a big vase and the different density's will sit on top of each other . the best thing to do is to use food coloring so that each level is a different color.
All of them are important to identify a mineral and get information from it, but I'd say the least important is cleavage.
Answer: A. the ideal gas law is PV=n RT
Explanation: