June 2009 - Chemistry

<p>Spectator ions-Na+ and Cl-</p>

<p>What were the gases that could be collected through water displacement?</p>

<p>Yeah, for that one I put H2 only but remembered that heating kclo3 could be used to make O2 as time was called.</p>

<p>i dont think embargo’s lifted yet… it was last edited in january…</p>

<p>which one rusts faster: iron mesh or block?</p>

<p>thats what i put. what about for geometric shape of ccl4?</p>

<p>Chromium (VI) turns into Chromium metal</p>

<p>Which process is that?</p>

<p>I got four TTCE’s as answers. The statement about chlorine and sulfur was false because chlorine was the stronger oxidizing agent.</p>

<p>iron mesh
due to greater surface area
i left 1 blank, aiming for a 800</p>

<p>chromium VI to chromium is reduction: 6+ to 0</p>

<p>CCl4 is tetrahedral.</p>

<p>but isnt geometric shape different than molecular shape?</p>

<p>yea, tetrahedral, just like CH4
reduction
i remember i got 5 or 6 CE answers</p>

<p>CH4 being a B-L acid…F/F?</p>

<p>TTCE question about NaCl depressing the freezing point of water (true) because it has a greater gfm then water (true) but no CE?</p>

<p>thats what i got: it’s covalent so its not a base</p>

<p>I got Tetrahedral for CCl4</p>

<p>CH4 is not an acid, and has no lone pair. F/F</p>

<p>Also, Limestone + acid rain was neutralization</p>

<p>Does anybody know what the answer was to what products are formed by K and H20- the answers were any combination of H2, H30+, and OH-. Also, what was the answer to the “How many unpaired electrons can a set of 2p orbitals hold?”</p>

<p>which one isn’t a function of temperature?</p>

<p>NYEM, that’s what I got. T/T/no CE</p>

<p>@ladidada94
K and H2O form H3O and OH-
and 2p can hold 3 unpaired</p>

<p>@NYEM: it was T/T/noCE i put T/F because i’m ****ing ■■■■■■■■</p>

<p>@jhockey
what question was that?</p>