AP Chem Chapter 5 Test - Gas Laws January 17, 2008
Basically, you want to know how the properties of gases affect each other, what makes gases special from other phases of matter, the differences of the ideal gases and real gases, how to use ALL your equations and what the variables stand for (the appropriate R values for each), how to convert from one unit to another, whenever you used temp. it should be in Kelvins, gas law stoichiometry, mole fraction and partial pressures, the postulates of the KMT, diffusion and effusion. You will be given equations and constants.
ru going to give us like atm to torr and those kinds of conversions and all the R’s, or do we have to memorize them?
Thank You!
Infinite XOXO’s!
Will we be grading the problems from Chapter 7 tomorrow? I’m confused…Could you possibly help me in the morning? Let me know, thanks a bunch!
k.leigh
The Chapter 7 problems are due January 28. We will be discussing the chapter in class and you can ask questions then if you want.
ok, so hi! I was absent today, so i missed class today! I was just wondering if we had any homework for today or if we just did the lab the whole time?
thanks!
We went over questions on the homework and graded HW#3. Then we started the lab. Make sure you have read through what you are supposed to do next. Tomorrow during SRT, you need to come to my room with your lab group to do part II of Lab #2 since they have to be done within a 24 hour time period. I am sending an email to the teachers so report to SRT for attendance and then come down here. I will have you grade your homework when you get back.
I didnt know where else to put this…
I have a few questions on the homework and a dilemna over the lab.
first, the dilemna. When we did our lab, we forgot to measure the temperature of the water at room temp, and when we measured out the hot water into the cup.
Would it be alright if we come in sometime the beginning of next week to redo that part? (depending on nicole and matt, I havent talked to them yet)
and my questions over the homework…
first # 34. I dont know how to even start it and I couldnt find one like it in the book… could you give me an example of something like it?
in number 56, does H2O gas break down? I cant get it to cancel out…
I cant figure out how to do 63 b…
and on 65, I couldnt find Al2O3 on that chart.
sorry I have so many questions.
#34, use stoichiometry
In #56, you can multiply the equations to get them to cancel.
In 63 b, your reactants will be what is says in the problem, and your products will be HNO3, NO, and gaseous water. That is your hint. You will also need to include the equation for going from H20 liquid to H2O gas so you can cancel out the liquid water.
Al2O3 is in the appendix. Some people’s books have it as Al2O2, but this is a misprint. Fix this in your book so it reads Al2O3. It is something like -1600 if I remember correctly.
What does it mean to catalytically decompose something?
catalytically - with a catalyst
decompose - to break up into parts
I am confused on the lab with the Mg and HCl.
I got all of the calculations except for the ln [H3O]+. I dont know how to figure that out…
and then the part after that… ln rate= m ln[H3O+] + ln k
I am not sure what to do with that…
[...] April 27, 2008 Filed under: AP Chemistry — Mrs. Berger @ 3:21 pm So Torie commented on another post but I thought this deserved its own post. Here is what she said: I am confused on the lab with [...]