It would definitely be hand lense
Answer:
I guess 3 to be honest and that's what I think
Uranium is in the "f" block, because it's external electron configuration is
In response to your question, the kind of energy the skier has is called potential energy.
Answer:
The dimerization of butadiene to 4-vinylcyclohexene folows second order kinetics and its rate law will be given by :
![R=k[C_4H_6]^2](https://tex.z-dn.net/?f=R%3Dk%5BC_4H_6%5D%5E2)
Explanation:

The rate of the reaction ;
![R=k[C_4H_6]^x](https://tex.z-dn.net/?f=R%3Dk%5BC_4H_6%5D%5Ex)
As given in the question , that graph of time verses
was linear but plots of
or
was curved.
Generally:
Graph of time verses
for zero order reaction is linear with negative slope.
Graph of time verses
for secon order reaction is linear with negative slope.
Graph of time verses
for secon order reaction is linear with positive slope.
So, the dimerization of butadiene to 4-vinylcyclohexene folows second order kinetics and its rate law will be given by :
![R=k[C_4H_6]^2](https://tex.z-dn.net/?f=R%3Dk%5BC_4H_6%5D%5E2)