Official December SAT II Chemistry Thread

<p>is water a strong electrolyte?</p>

<p>Doesn't Ne not react with anything ever...? Because it's a noble gas..?</p>

<p>No, hurdlerock, H2O isn't. I put F/T for that I believe.</p>

<p>i dont think water is a strong electrolyte, and ur right about F/T and the octet noble gas thingy, i mean hydrogen and Ne dont sound right together</p>

<p>good i didnt put that</p>

<p>did u guys get alot of C's, cuz i remember putting alot of them down</p>

<p>so what's the answer to the PbI2 question, and why?</p>

<p>I had a lot of E's starting on the 2nd or 3rd column.</p>

<p>0.050 moles. Here's the equation, Goldfish.</p>

<p>Pb(NO3)2 + 2KI -> 2KNO3 + PbI2.</p>

<p>You have 0.100 moles of both reactant, meaning that KI is the limiting reactant. Hence,
0.100 mol KI * (1 mol PBI2/2 mol KI) = 0.050 mol PbI2</p>

<p>im sure its .05 i forgot wut i did htough</p>

<p>HCL and CO3(-2) combine wut is produced, i put a gas is that right?</p>

<p>Yeah, CO2.</p>

<p>for the major compound for glass did u put SiO2</p>

<p>that's what I put too.</p>

<p>did u get filter aper twice at the start</p>

<p>No, I only put that once, for separating the precipitate and the liquid.</p>

<p>ink one -- chromotography</p>

<p>and yea i think i got filter twice. I kno that the buret one wasnt used</p>

<p>i think i used the distillation choice once also</p>

<p>yuppppppppppppppp</p>

<p>AgCl2 and Cl - combine to form a precipitate right?</p>

<p>where was filter used twice?</p>

<p>uhhhhhhhhhhhhhhhhhhhhh i have no idea wut that Q was, ut i think so</p>