November 2008 SAT Subject Test: Chemistry

[bicyclekick]

<p>i thought it was K(NO3) because i think it said that the solution was evaporated and then something was left over, hence me thinking it was a salt of K(NO3)</p>

[1991]

<p>i also put K(NO3)…what about one for a solution of a strong acid??was it I II III??</p>

[Millerl1te]

<p>Yeah 74. Sorry my brain’s fried That’s def above a 750</p>

[tjwogus820]

<p>The question asked what identifies the one that was EVAPORATED = KNO3.</p>

<p>Other questions that I recall were…</p>

<ol>
<li> The graph of H20 vs H2 when H2 was added with constant 1 mol O2.</li>
<li> When something was added, forms hydroxide both acidic and basic.</li>
<li> Which is the least present in air?</li>
<li>The question wit Kinetic Molecular Theory. not sure, but I put something with volume.</li>
<li> Which has the highest First Ionization Energy.</li>
<li> HC2H3)2 and NaHCO3 react. what are the products.</li>
</ol>

[Millerl1te]

<p>A tjwogus820

1. it was the curve then the flat line
2. aluminum
3. heat of fusion or something like that. Im pretty sure it was the heat answer.
4. Li
5. CO2, H2O, and sodium acetate</p>

[1991]

<p>a curve nd then a flat line??wasn’t it a str8 line and then a flat line??</p>

[1991]

<p>and what about the solution of a srong acid??was it I AND II AND III??</p>

<p>and in part a was it a buret for titration??</p>

[bicyclekick]

<p>anyone remember the isomer question??</p>

[TheWerg]

<p>I omitted four, just hoping for a 700. Didn’t think it was really hard but I’ve only had two months of AP Chem so I had to study on my own.</p>

<p>I didn’t know the isomer one either, haha.</p>

[Millerl1te]

<p>at 1991 yeah. I meant it had a straight slope. and Idk about the other. I think the isomer was CH2Cl2</p>

[futureEE]

<p>Pretty sure Millerl1te has the isomer one, answer A, every other molecule was just too large, and had a few possible isomers.</p>

[Millerl1te]

<p>Yeah im pretty confident in that one, like 90%. What was the question about the strong acid?</p>

[Shifu_Yoda]

<p>gotgame1010: About the NH3 true/false question, it does not form hydrogen bond with water. Draw out the lewis dot structure and see. The bond forms between N and O.</p>

<p>And for the adding hydrogen question, the H2 is on the X-axis. Beware.</p>

[Shifu_Yoda]

<p>

2. aluminum</p>

<ol>
<li>Li</li>
<li>CO2, H2O, and sodium acetate

</li>
</ol>

<p>Agree. 10char</p>

[Shifu_Yoda]

<p>

and what about the solution of a srong acid??was it I AND II AND III??</p>

<p>and in part a was it a buret for titration??

</p>

<p>

I think the isomer was CH2Cl2

</p>

<p>Yes. Strong acid dissociate completely & react with base blah blah.</p>

[Shifu_Yoda]

<p>

The pressure in the tube is the atmospheric pressure minus the vapor pressure of the water (b/c the water molecules and the H2 molecules mix in the air above the water) minus the displaced pressure.

</p>

<p>Agree. The 2nd part of that True/False was F. Forgot the first part.</p>

[Shifu_Yoda]

<p>

Ice is less dense than water (it floats in water in drinks!), so that is true… Idr the second part.</p>

<p>NH3 is soluble in water (yes), but not it does NOT form hydrogen bonds with water.

</p>

<p>Correct. TF. NH3 and H2O forms covalent(?) and not hydrogen. (Draw out Lewis Dot structure?)</p>

[Shifu_Yoda]

<p>

2.another TF one about NH3.it said that it is soluble in water and that it forms hydrogen bonds with water.i put TF in this one.what do u think??

That’s what I put. See post 43.

3.the last TF one about partial pressures.i put TTCE.tottaly unsure about this one

I put FF. See post 42.

4.a part C one.it asked which of the following has the least number of moles.i put 1g of Ag.

Yes.</p>

[Shifu_Yoda]

<p>

I meant it had a straight slope. and Idk about the other.

</p>

<p>Correct. Remember to read the labels of the axis before picking an answer! It was a complete trick!!!</p>

[Shifu_Yoda]

<p>

i thought it was K(NO3) because i think it said that the solution was evaporated and then something was left over, hence me thinking it was a salt of K(NO3)

</p>

<p>Correct. Ba(NO3) is soluble.</p>