<p>@FlamingMango That’s exactly what I got, except I did it in a completely different way.</p>
<p>3. (g) *Fuel cells based on butane release Carbon Dioxide gas which is detrimental to the Earth, potentially aggravate global warming, etc. Also, butane cells require the use of Butane, which is a highly flammable, combustible hydrocarbon. It can thus be dangerous to use, etc. Hydrogen cell simply gives off water and is much safer and environmentally friendly. *</p>
<p>that’s what i said. except not the part that butane cells used butane which is highly flammable. but they only wanted one environmental advantage so i think im good.</p>
<p>can you go over your answers for #4 the net ionics. i am HORRIBLE at those. thanks!</p>
<p>For 5, e. i said it was a redox, am i wrong?</p>
<p>who actually has a copy of all the QUESTIONs, so i can see what they are asking</p>
<p><a href=“Supporting Students from Day One to Exam Day – AP Central | College Board”>Supporting Students from Day One to Exam Day – AP Central | College Board;
<p>(:</p>
<p>This is looking very good. Im pretty sure I got full credit on 2,3,6. Got one or two points off on 5 cause of the reaction. #1 i missed part of d and c i think. And #4 i got first equation right, second one i got products, third i got equation. And i got all explanations right expect for the lewis base.</p>
<p>So im hoping 5</p>
<p>@flamingmango, want to share your answers on the questions so i can compare? XD</p>
<p>What are the likely point allocations for each part within a particular question?</p>
<p>Also, I’m confused about 1. Could someone post a solution?</p>
<p>2) I have no idea why a volumetric flask isn’t needed, other than the fact that some error is acceptable? Also, what liquid do you use to clean up the HCL? NaHCO3 would produce NaCl, H2O, and CO2, and I don’t think you want CO2 in the environment. I really don’t understand what difference the NaCl makes when compared to the H2O…my only thought is that since the NaCl solution is diluted, maybe the H2O dilutes the acid more?</p>
<p>4) How in the world do you make the coordination complex with Co(NO3)2 and HCL?</p>
<p>5) Could you say N2H4 became N2H6 and not N2H5?</p>
<p>6) Isn’t the pressure equal to 100 torr since there’s no air and the only pressure is vapor pressure?</p>
<p>Thanks a lot guys.</p>
<p>For 5 e)</p>
<p>N2H4 + O2 -> N2 + 2H2O</p>
<p>N2 #s: -2
H4 #s: +1
O2 #s: 0</p>
<p>N2 #s: 0
O #s: -2
H2 #s: +1</p>
<p>Oxidation #s don’t change right? so it’s not redox?
And it’s not acid/base because there’s no acid or base right?</p>
<p>Did i miss something? if i did im going to /facepalm</p>
<p>i was WRONG :(</p>
<p>Question 1: out of 9. each point is multiplied by 1.66 (or 5/3)
Question 2: out of 10. each point is multiplied by 1.50
Question 3: out of 9. each point is multiplied by 1.66 (or 5/3)
Question 4: out of 15. each point is multiplied by 0.50
Question 5: out of 9. each point is multiplied by 1.25
Question 6: out of 8. each point is multiplied by 1.40625
Total: 75 points</p>
<p>@GODZILLA</p>
<p>Well,
N: -2 –> 0
O: 0 –> -2</p>
<p>I think that’s Red-Ox right there…?</p>
<p>yup i agree with pinkrose that’s what i ended up putting.</p>
<p>**** noooooooo :(</p>
<p>there goes my 3</p>
<p>What did you guys get for 6) a,b,&d?</p>
<p>and for 5f did you put positive S since it is becoming more disordered. and 5g i put false was the consensus on previous pages i think.</p>
<p>5f i said positive and 5g i said true</p>
<p>6a i put equal to 100. 6b i put more kinetic energy leads to more collisions and thus more pressure exerted by molecules on the walls of the container. also, per the equation pv = nrt that explains the kinetic molecular theory, that’s just how it works out. 6d i put 0.80atm.</p>
<p>what did you put for 6c? hahah</p>
<p>I got the same for 6 b&c, how did you do 2 c?</p>
<p>2c?? im not sure i did that one right but for grams i got 29.2598g - 28.7210g. then i just converted that to moles. i got 0.00376moles ???</p>