Answer:
Oxygen
Explanation:
Oxygen has 6 valence electrons and it wants to have 8 to obtain a stable octet. So Oxygen gains two electrons in the bond, developing an anion.
It is also a non-metal, and they tend to gain anions.
Answer:
i think its b but i could be wrong
Explanation:
Grass contains water and sheep need water.
Answer:
sedimentary rock
Explanation:
Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. And as you said "it formed from the remains of organisms that lived in water". And that makes it a sedimentary rock.
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Answer:
B) Ksp = 3.7 E-11
Explanation:
CaF2 ↔ Ca2+ + 2F-
S S 2S,,,,,,,,,,,,,,,in the equilibrium
⇒ Ksp = [ Ca2+ ] * [ F- ]²
⇒ Ksp = S * ( 2S )²
⇒ Ksp = 4S³
⇒ Ksp = 4 * ( 0.00021 )³
⇒ Ksp = 4 * 9.261 E-12
⇒ Ksp = 3.704 E-11
