Author Question: When the Huygens probe touched down on Titan, it landed A) in a vast ocean of liquid methane B) ... (Read 75 times)

maychende · **on:** Jul 27, 2018

When the Huygens probe touched down on Titan, it landed

A) in a vast ocean of liquid methane
B) on a solid surface of frozen water and methane ices that resembled a streambed
C) in a shallow pool of liquid methane
D) on the slopes of an icy volcano covered with water and methane ice

Question 2

Consider an atom of oxygen in which the nucleus contains 8 protons and 8 neutrons. If it is doubly ionized, what is the charge of the oxygen ion and how many electrons remain in the ion?

A) Charge = +2; number of remaining electrons = 8.
B) Charge = -2; number of remaining electrons = 10.
C) Charge = +2; number of remaining electrons = 6.
D) Charge = +2; number of remaining electrons = 2.