I have the same question right now and i think that it is D
Answer:
A channel in an ancient Martian "river bed" was not carved out by liquid water but built by molten lava
The dispersed particles of a colloid exhibit brownian motion, in which they move in a chaotic manner without a discernible pattern. The brownian motion is the erratic random motion of particles that are suspended in a fluid which results to the collision of molecules moving fast in the fluid they are in.
Volume = Mass / Density
Volume = 147g / 1.010 g/ml
Volume = 146 ml
The outer electron of atom B has moved to a higher energy state.<span>B - 1s2, 2s2, 2p6, 5s1 </span>