D. Earthquake
This is because all the others are landforms.
Answer:
answer is b
use pv=nRT
p directly proportional to moles(n)
p1/p2=n1/n2
p/p2=n/2n
p2=2p
Answer: No
Explanation: The reason for this is because calcite has a hardness of 9 while feldspar has a hardness of 21. Calcite can scratch Gypsum which has a hardness of 3.
0.5 moles, though not a verified answer hope it helps! :D
It’s a centrifuger there are many steps to this do I advise looking on the internet or i could explain if needed