Answer:
I'm Not Good At Chemistry.
Explanation: It's Hard.
Answer:
He supported the ideology of Marxism.
He opposed the tsar and was exiled.
He led the Bolsheviks.
Explanation:
Lenin was Russian Revolution political theorist. He served as first founding head of government of Soviet Russia. He supported the ideology of Marxism and opposed Tsar.
Answer:

Explanation:
The formula for tin(IV) sulfide is SnS