I need help on my Chemistry homework.

I just wanted to make sure that I have the right answers for my chemistry home so I will put the answer I though it was at the bottom of the question. Thank you for your help.


Referring to an activity series, which of the following combinations of reactants would not produce a successful single-replacement reaction? (2 points)

A. Li + NaCl
B. Cu + CaCl2
C. Mg + FeCl3
D. Ca + AlCl3
I think the answer is B

What is a possible formula of a compound formed when lead and chlorine bond? (2 points)

A. PbCl
B. PbCl3
C. Pb2Cl3
D. PbCl4
I think that the answer is D

Which of the following is not an example of kinetic energy? (2 points)

A. mechanical energy
B. nuclear energy
C. electrical energy
D. thermal energy
I think that the answer is C

for your first question option B is correct because for single-replacement reaction the up coming ion should create more stable molecule than the present molecule.I dont expect option D coming to question two and for the last question kinetic energy is part of mechanical energy,nuclear energy is energy of atomic nucleons released when fission or fusion or any sort of radio active decay.electrical energy is a sort of potential energy and potential energy is a part of mechanical energy i expect D to be correct answer

1st is A
2nd Should be PbCl2 either Pbcl4
3rd is Thermal Energy

mmmmm not sure about A,but in B the correct answer is D:) and in C it is D rather than C