June 2010: Chemistry

<p>Can someone post the curve from the official CB book</p>

<p>What about the oxidation one? I thought it was Fe (transition metal!)</p>

<p>For the question with largest molar volume of Helium, was the answer 1 atm and 400K (or w/e the one with largest temperature)?</p>

<p>It’s Fe and B. I made a typo earlier</p>

<p>ok, ive asked tihs before but nobody has given me concrete advice so im asking again.</p>

<p>I missed 6 questions out of all the ones jolly listed above. i do not feel comfortable with the last 10 questions or so (estimating i get about 3/4 correct) on part C as i had to do them extremely quickly and did not have time to fully think about things. furthermore, i left 3 blank. should i just cancel my score and take it in october?</p>

<p>For X2O3 its Boron and Al only. it cannot be calcium because 3rd Ionisation enthalpy for Ca is too high and hence it is impossible for Ca to lose the third electron</p>

<p>@ Hifemale ; WOW, haha, thanks for explaining, I can’t believe I made such a careless mistake, asldasdlasd. ): Anyway, thanks for showing me how you got it! :]</p>

<p>82-85 800
80-81 790
78-79 780
76-77 770
74-75 760
72-73 750
70-71 740
68-69 730
66-67 720
63-65 710
61-62 700</p>

<p>^yeaaa you know what these aree</p>

<p>@jollyrancher- Fe is not a transition metal although it is a d-block metal. Remember all d block elements are not transtion metals</p>

<p>Guys, Boron is a non-metal. It’s Fe only.</p>

<p>@md5hash</p>

<p>So judging from what you’ve said, you’ve missed… 9 left 3 blank. That still sounds like a 700+. According to Sparknotes, it’d be a 740 but I don’t know how accurate Sparknotes is.</p>

<p>Wait seriously? Only Fe? Do you remember the Q?</p>

<p>[SparkNotes:</a> SAT Chemistry: Scoring the SAT II Chemistry](<a href=“SparkNotes: Today's Most Popular Study Guides”>SparkNotes: Today's Most Popular Study Guides)</p>

<p>Sensei-
Did the question ask for metals only?
I think it said which could fit as X in X2O3.</p>

<p>i wrote it was the 1atm and 400 too (C)</p>

<p>No problem :)</p>

<p>anyone know what the curve was last month? I thought -5 or 6 was 800?</p>

<p>well boron is a metalloid :S</p>

<p>@LightAiren</p>

<p>It’s Boron and Iron.</p>

<p>Edit: nvm. I’m wrong :(</p>

<p>[Boron</a> trioxide - Wikipedia, the free encyclopedia](<a href=“http://en.wikipedia.org/wiki/Boron_trioxide]Boron”>Boron trioxide - Wikipedia)</p>

<p>Boron trioxide doesn’t make any sense to you, Sensei?</p>