<p>experimental error: 25%
Sucrose: 45 atoms
question with which dot structure was wrong: E
PH:2 for a particualar question
pressure of gas: only number of moles</p>
<p>do you guys think -10 on raw score can help me scrape 750</p>
<p>Yeah, I think it was 13% Li, but I’m not entirely sure…</p>
<p>The experimental error was 25%.</p>
<p>I don’t exactly remember how the statement went with the oxygen and limiting reagant… oh wait, I guess that was a T,T,CE too…</p>
<p>The pH, if you were talking about the one toward the end of the test, was actually a 12, because they were asking about Potassium Hydroxide.</p>
<p>I think there was another question that asked about which substance would most readily decompose if heated, but I’m not even entirely sure that was even on the test!!! 
:P</p>
<p>And @NFFF344, it depends on the curve of the test… crossed fingers!!!</p>
<p>@ F-13, the compound that would most readily decompose was Ammonium Sulfate (I believe)</p>
<p>“A few binary compounds decompose to their constituent elements upon heating. This is an oxidationreduction reaction since the elements undergo a change in oxidation number. For example, the oxides and halides of noble metals (primarily Au, Pt, and Hg) decompose when heated.”
From this site: [Chemical</a> Reactions - Chemistry Encyclopedia - reaction, water, elements, metal, gas, number, salt, molecule, Combination Reactions, Decomposition Reactions, Single-Displacement Reactions, Double-Displacement Reactions](<a href=“http://www.chemistryexplained.com/Ce-Co/Chemical-Reactions.html]Chemical”>Chemical Reactions - Chemistry Encyclopedia - water, elements, metal, gas, number, salt, molecule)</p>
<p>so im guessing the answer to that question has to be the metal oxide.</p>
<p>(darn!)</p>
<p>can anyone confirm the sucrose question? and I got thirteen percent lithium.</p>
<p>@bambi12 No, I disagree with that. “Decompose” means that a COMPOUND, separated into its components. I don’t dispute your source, but the website talked about the halides and oxides of noble metals. The test listed “Pt” alone as a choice; it did not mention any oxides or halides, and I don’t think it did mean these, so I don’t think it could have been the answer. I saw that there were a lot of ionic compounds, and those have very high melting and boiling points (ie higher amounts of energy for those processes), not to mention decomposing them, so I ruled those out. But I just can’t remember my choice. It might have been (NH4)SO4, as 800orBust said.</p>
<p>EDIT: Yes. Sucrose was 45 atoms (I mean, add them up!!! Jeez!!!)</p>
<p>ANOTHER EDIT: Wait, hold it right there!!! There was Fe2O3, and that one DOES NOT decompose when heated. It should, in fact, oxidize even more (if I remember correctly). In other words, it’s NOT correct.</p>
<p>i was so lazy doing tht 13% litium Just made a guesss :D</p>
<p>for the question with the wrong dots i got F2 or what was supposed to be F2 but with like a double bond b/w them</p>
<p>@coffeedrinker Yep. You reminded me of that one 
.</p>
<p>Yes, Sucrose is 45 atoms. </p>
<p>Glucose (C6H12O6) + Fructose (C6H12O6) –> C12H22O11 + H2O</p>
<p>12 + 22 + 11 = 45</p>
<p>I’m still in AP Chem and thus haven’t taken the test yet, but the TTCE seems pretty intimidating. How are the curves, generally, anyway? I looked at the Sparknotes one, but that looked horrendously off (-2 was <800, I believe)</p>
<p>Diatomic Fluorine doesn’t have a double bond. The answer was…uhhhh…the nitrogen one. Diatomic nitrogen has a triple bond in between…and the answer given wasn’t with a triple bond.</p>
<p>haha crazed out boy read the question wrong again?
It asked which structure was wrong, and also I remember the nitrogen had a triple bond.
It was F2 (They showed a double bond when it should have been a single bond)</p>
<p>what was the configuration for the atom with 4 unpaired electrons in ground state?</p>
<p>Okay got it. Yeah I know for a fact I picked the right answer…after posting I couldn’t remember if fluorine had a double bond in one of the answers I got it right though…my memory though is bad :P</p>
<p>4 unpaired electrons would have to be in a d orbital since it has 5 orbitals. So it was the one answer choice with a d orbital.</p>
<p>For anyone who used Barrons,</p>
<p>Was reading over the book thoroughly sufficient for almost every question?</p>
<p>dont chemical formulas represent mole to mole ratios in compounds though? so it would be avagadros number times 45…?</p>
<p>Reading Barron’s was very helpful.</p>
<p>I only used barron’s for thist test
and wow that book was just amazing. the test was like a walk in the park.
i was fairly confident with all the questions except 1 that i skipped.
hoping for a 800 :)</p>