Whenever I have tests like these, I make a quizlet with each part zoomed in and then answer it that way.
Ferromagnesian silicate minerals (i looked it up)
It's because of the angle at which the light hits the moon
9.0 grams because the atomic mass of 1 mole of Neon STP(22.4L) is 20.17 and cross multiply 10.0g(given) by the 20.17, and divide by 22.4L to get 9.00 grams of Neon to match 10L container at STP