<p>I show a cool demo to my students. Put some universal indicator in water. Blow through a straw into the liquid and it goes from green to orange as it becomes acidic. Equations: CO2 + H2O → H2CO3 → H+ + HCO3-</p>
<p>Grabailikov,</p>
<p>no sorry</p>
<p>Btw, which MC Q’s did you guys have trouble on? I think I only got a few wrong, but I might of overlooked some tricky ones.</p>
<p>sooo I’m just looking for a bit of clarification about what score I can expect: I made some really dumb mistakes and I CAn’t believe I missed them, like I’ve been hitting myself on the head because I totally could have done them but I didn’t…anyways so what i got wrong wasss…</p>
<p>~5-10 MC off (at most probably)
~The second half of question 2 (c,d,e) (but at least was able to use Pv=nrt to get Hydrocarbon empirical formula and a rough mass of hydrocarbon that reacted without a calculator)
~The first reaction I had write reactants but carelessly screwed up with balancing/products
~MAy have carelessly done my lewis dot structure wrong by miscounting (IDK D: can’t rmbr)
~+ the possible one or two points off for careless mistakes per 6 FR</p>
<p>Any estimates D: D: IM SOOO Scared and sad about how dumb I was and how bad a test day i had…</p>
<p>If you got 65-70 on MC, you got a 5</p>
<p>even if I got all those FR wrong?
Btw just figured out I said I3- would be more concentrated in hexane than H2O because of the lack of polar covalent bonds so that’s another thing wrong…</p>
<p>If you got 65 right on MC, you would only need 35 out of 75 (approximately) to get the 5. Students who get 65 right on MC typically get more than 40 right on FRQ. 35 isn’t even half the credit. I think you’re alright.</p>
<p>From your description, it sounds like you got about 55 on FRQ.</p>
<p>okay thank you so much!!! Hopefully I got a 5…or i swear i will redo it next year XP</p>