Recent content by RPN

Okay Then I would use Mg as the anode as it has a lower reduction potential?

Cathodic protection correction Thanks for the table you provided. I think I can explain it a little better. On teh aluminium hull I would attached zinc due to it having a lower reduction potential. The zinc would corrode faster than aluminium and therefore be the anode. The most negative is the...

hello I saw someone had posted a question about this question but I too do not have a clear understanding of how to solve this equation. I have a very small section in my text about electroylsis and I have looked for information in others texts but I still need help. Please if anyone has an...

Hi there, Can anyone tell me if this is right. If I were to have an aluminium boat and I want to give the hull cathodic protection what metal would I use. I said that I would use a more active less noble metal such as zinc. by placing the zinc it becomes the sacrifial anode and the hull is...

Hello, Can someone show me a good site that helps explain how to determine oxidation numbers. I keep reading the same information in my textbook but I still don't have a clear idea on how to do that. Thank you

Hey , I still do not understand how to determine the activation energy for the reverse reaction when you are given the activation energy for the forward reaction and the delta h for the reaction. I was told to draw an energy diagram but I think I am drawing it wrong. I do know that the...

And another question I have is when I am given the activation energy for a forward reaction and I have found the heat of reaction how do I find the activation energy for the reverse reaction.

Thanks for your help with the other answers. The original question states: What would be the effect of an increase in temperature on the rate constant of a) the forward reaction? b) the reverse reaction?

Hello, I really want to thank everyone that has helped me in understanding chemistry. I have started a few questions on rates of reactions and would love it if someone could look over my answers and see if I am headed in the right direction. 1) The rate of a simple chemical reaction like...

Hello I am trying to solve this question and have been stumped for quite a while. Can some tell me the steps I have to take in order to solve this. Question Calculate the heat of combustion for C2H6 from the following information: C2H4+ 3O2----> 2 CO2 + 2 H2O -1409.5kJ C2H4...

Hello I did an experiment and here are my results. Observations Liquid Depth of vortex Time Paint thinner 2 lines (2.0 cm) 4 seconds Oil 1 line ( 1.0 cm) 2 seconds Water 3 lines ( 3.0 cm) 8 seconds Questions 1. Based on the results from the experiment I would say that paint...

Okay I did my work but if someone would be so kind as to look at it and see if I am understanding. Questions 1. Explain why you would expect a BeF2 molecule to be linear but an SF2 molecule to be angular? BeF2 forms an ionic bond with 2 single bonds. Since Be is in group IIA it forms two sp...

Thank you so much. I really appreicate all the help provided here.

Thanks for the quick reply! So I went to the links and I think these are the answers a) a 2s orbital has 1 nodal surface b) a 3px orbital has 2 nodal surfaces Is that right? Thanks for the help!

Hello, New to chemistry need help with this question and I don't understand what a nodal surface is How mnay nodal surfaces are there for a) a 2s orbital b) a 3px orbital If anyone can help me that would be great. Thank you