Answer:
oxidation is the loss of oxygen and reduction is the gain of oxygen
Explanation:
Answer:
Elements are made of only one kind of atom
Compounds are made of 2 or more elements chemically bonded together
Explanation:
Its right there????
The last answer is correct
Answer: a) Temperature of 
b) 
c) dehydrating agent
Explanation:
Ethanol is heated with an excess of concentrated sulfuric acid at a temperature of 170°C to produce ethene.
The balanced chemical reaction is:

Here concentrated sulfuric acid removes a water molecule from ethanol and thus acts as a dehydrating agent.