Answer:
Single displacement reaction.
Explanation:
Hello!!
In this case, since the reaction between silver nitrate and copper metal is:

As silver was forming silver nitrate, due to the presence of copper, which has the capacity to displace silver out of the salt, we notice the formation of solid silver and a resulting copper (II) nitrate which is blue in aqueous solution.
Therefore, this is a single displacement reaction, because the the lonely copper displaced the silver.
Best regards!
Multiply 3 by the atomic mass of fluorine, forgive me if I’m wrong
Answer:
a) 
b) 
c) 
Explanation:
From the question we are told that:
Moles 0f Nitrogen 
Moles 0f Oxygen 
Volume Decrease 
Generally, the equation for Concentration is mathematically given by

For Nitrogen


For Oxygen


For Nitrogen


The man rushes through your door with his fists in the air, all of the sudden your vision went black, and he had stolen your points.