I know for number 4 the answer is c, sorry I can't help with the others.
Answer:
3,717,813
Im not sure, I will get back to you soon
Based on the scenario, the matter escaping from the pot is an example of an : C. Open system because heat and matter are both able to enter or leave the system
The key word here is 'steam can be seen escaping from the pot' , which indicate that the matter and heat able to leave the system after it's entered.
hope this helps
Zinc is oxidized because it starts as a metal with an oxidation state of zero and ends up as an atom bound to oxygen. Oxygen has two bonds, so the oxidation state of Zinc would be 2. The Mercury is therefore reduced because it undergoes the opposite process. This is a REDOX reaction, and the two half-reactions are:
Zn -> Zn(+2) + 2e(-)
Hg(+2) + 2e(-) -> Hg
The answer to your question is C. I hope that this is the answer that you were looking for and it has helped you.
In the 3 molecules of NH3 there are 9 Hydrogen atoms.
