<p>we went over this before. the reagent is what you're titrating with and you measure that volume with a buret. (i.e. ur titrating weak acid and strong base, need to know volume of base to neutralize acid, use the buret - also has more sig figs)</p>
<p>I think I also put water for that one question, just because water vapor's always present in air . . . .</p>
<p>The answer to the titration question was a buret.</p>
<p>A buret has VOLUME MARKINGS on it. Reagent is what you titrate with.</p>
<p>You can conceretely say that the reagent, which is what you titrate with, is sitting inside a buret that has volume markings on it. And you would rather have us take the time to take it all out, measure it pre-titration, put it in, then take it back out and measure it post-titration?</p>
<p>The answer is buret. Argue if you will, but it doesn't make your answer any less wrong.</p>
<p>ok, nice ebonytear. the test said ''normal atmospheric conditions'', so the answer is H2.</p>
<p>Reactions are more favored to be disorderly (chaos theory, frikin awesome!). so that was a false one</p>
<p>Total questions = 85
Raw Score = (# of correct questions) - (# of questions attempted but got wrong)/4 --> same for all questions, including the T/F/CE parts</p>
<p>85 800</p>
<h2>84 800</h2>
<p>78 800
77 790
76 790
75 780
74 780
73 770
72 770
71 760
70 760
69 750
68 750
67 740
66 730
65 730
64 720
63 720
62 710
61 710
60 700
59 700
...</p>
<p>If you did titration experimentally, you have your strong base (or whatever ) in the buret, and an acid in the flask. You then proceed to add base by twisting the knob, which adds a small amount of base each time you rotate the knob.</p>
<p>The lab work problem -</p>
<p>answer is "slowly add water to dilute concentrated acid"</p>
<p>This is highly exothermic, so its incorrect.</p>
<p>The acid is always added to the water, not the other way around.</p>
<p>pudding girl: that's bio...is it the same for chem?</p>
<p>variance, u never came online...this is my sn: theguju4lyfe, if u get this IM me, thanx</p>
<p>^
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i'm sorry, i mean to say that this is the curve for previous real sat ii chem</p>
<p>is that the curve in the real sat ii book? if so, that means you can miss 20 and still get a 700, yay! lol</p>
<p>I just realized that I said I put water for that question because there's always water in the atmosphere, lol. I meant to say that I marked H2, because ....</p>
<p>didnt i say adding water to acid was wrong?</p>
<p>for one of the questions I said fire sharpening glass was unsafe... the other choice was adding water to acid...</p>
<p>which one is right?</p>
<p>Why would you want sharp glassware?</p>
<p>its fire polishing glass is the unsafe laboratory practice... everything else seemed fine to do in a laboratory. </p>
<p>also, im pretty sure that adding water to acid is safe. it dilutes it, so why would it be unsafe?</p>
<p>adding water into solid acid highly unsafe...</p>
<p>it will create a very exothermic reaction and u will burn yourself</p>
<p>^^ Because it releases a lot of heat. Try it in a lab sometime. I did it in a lab and using just foam cups, 50mL of 1M HCl + 50mL of 1M NaOH released enough heat to bring the water up 10 degrees. Therefore, the rule of thumb is adding acid to water.</p>
<p>The correct answer is adding water to acid.</p>
<p>the safe way to do is:
add acid very slowly to a large quantity of water..</p>
<p>yup i was really confused on that question too, but i remember in a lab we did that the teacher made us dilute the acid by pouring the acid into the water, not vice versa</p>
<p>so approximately how many can you miss for an 800?</p>
<p>what was the asnwer to the question about what releases the most eat (it had to do with NaOH and another acid i believe) and why> I think i put H2SO4, but i totally guessed.</p>