<p>What’s a good source for studying VSEPR models and molecular geometry?</p>
<p>@xbox nope</p>
<p>for VSEPR and geometry: <a href=“http://apchemistrynmsi.wikispaces.com/file/view/08%20Bonding%20General%20Concepts.pdf/116713755/08%20Bonding%20General%20Concepts.pdf”>http://apchemistrynmsi.wikispaces.com/file/view/08%20Bonding%20General%20Concepts.pdf/116713755/08%20Bonding%20General%20Concepts.pdf</a></p>
<p><a href=“http://apchemistrynmsi.wikispaces.com/file/view/09%20Covalent%20Bonding%20Orbitals.pdf/116713757/09%20Covalent%20Bonding%20Orbitals.pdf”>http://apchemistrynmsi.wikispaces.com/file/view/09%20Covalent%20Bonding%20Orbitals.pdf/116713757/09%20Covalent%20Bonding%20Orbitals.pdf</a></p>
<p>@zah0813 I love you. </p>
<p>@coolschool Do you mean H+ + OH- -> H20?</p>
<p>What do you need help with? Give me an example</p>
<p>What’s gravimetric analysis?</p>
<p>@meaa7130 When a ppt forms, you use gravimetric analysis to separate the ppt from the sol’n.</p>
<p>Gravimetric analysis is making a precipitate out of a solution to find out the molarity of the original solution.</p>
<p>Hi I am a online school student so I have to go to a site to take the test. I was wondering if the day of the test, tomorrow, was too late to request a refund? Because I don’t want to take the test–I did really bad on the practice test and I just don’t have enough time to study. The AP website said as long as I didn’t write on it but I’m not sure.</p>
<p>@Hawkace I need help with strong acid strong base neutralization, buffers, titration, etc. Pretty much the entire acidbase unit. I’ve tried every source I could find (5steps to a 5 review book, NMSI, notes in class, etc) but I can’t seem to figure it out.</p>
<p>coolschool, PM me. I can help you out.</p>
<p>@xxx123456xxx
Refunds
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<p>Thank you @KiterPatel !</p>
<p>But it’s Cl2 so you gotta times it by 2.</p>
<p>How do you get the answer to number 7 over here </p>
<p><a href=“http://www.sciencegeek.net/APchemistry/APtaters/chap12rev.htm”>http://www.sciencegeek.net/APchemistry/APtaters/chap12rev.htm</a></p>
<p>I tried using 1/[At]- 1/[A0]= kt but did not get any of the listed answers</p>
<p>I used 1 as the initial conc, and .7 for the At</p>
<p>@NerdAlert94 it states equimolar amounts, meaning that if there were both 35.45 grams of chlorine and potassium, the potassium would run out first cuz it needs 39.1 grams to completely react with all of the chlorine</p>
<p>@coolschool I got you, bro, unless kingofxbox wants to help you. King, should I do the honors or do you wanna do it?</p>
<p>Here’s are the major points:
Weak base with conjugate base makes a good buffer. NH3 + H20 --> NH4+ + OH-
Weak acid with conjugate acid makes a good buffer H3PO4 --> H2PO4 + H+</p>
<p>H+ + OH- -> H20 in all neutralization reactions</p>
<p>Titration uses neutralization reactions basically. </p>
<p>Good luck</p>
<p>@NewJersey25 The equation you used is for second order reactions. You need to use the one with ln.</p>
<p>FOR rate law, I’ve seen many times that one of the reactants will not have any two e xperiments where the concentration is the same, What do you do then?</p>
<p>Guys, I don’t think we’re allowed to post the practice exam or the answers online because of policies. Just everyone who posted the exam or answers should erase it as soon as the exam ends. </p>
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<p>@Hawkace thanks for the offer, I already PMed king about it and he’s helping me with a practice problem. I will let you both know if I still don’t understand it though. </p>