May 2007 - Chemistry

<p>CO2 is linear, bond angle of 180.</p>

<p>one about where H2 + O2 produces water and lots of energy at 1atm and 20C but is then cooled/ answer choices were like X liters of O2 // h2</p>

<p>oh yeah, is H2O Linear? I know it's Bent linear, but is that considered completely different than "linear"?</p>

<p>Anyone know how to do that bohr model chart?</p>

<p>how about..paper chromo. for the ink question?</p>

<p>is NaCl more dense than H20? this question was a roman numeral one</p>

<p>you use distillation to sperate ink and salt...</p>

<p>Water is not linear.</p>

<p>Electrolysis of water is endothermic.</p>

<p>Paper chromotography for the ink question.
NaCl more dense than H2O.</p>

<p>is N2 linear?</p>

<p>was evaporation an answer to any of them..</p>

<p>I dont know what shape N2 is. It has a triple bond and is nonpolar though.</p>

<p>Evaporation for the salt in water.</p>

<p>Na+Water-->Nao + H2 ?</p>

<p>evaporation was for one of them.. i think the salt water thing and having the water evaporate.</p>

<p>Na + H20 --> NaOH + H2</p>

<p>skp21..that dont make since because the H are not balanced?</p>

<p>I thought that was something like it has a higher boiling point, etc etc.. hmm</p>

<p>THere was one I II III question with ...H+...CaCO3-> and you have to choose which ones were products... I Ca2+ II 2 mol CO2 III Avogadros number H2O atoms... what was that?</p>

<p>2Na + 2H20 --> 2NaOH + H2 ??</p>

<p>CaCO3 + 2HCl -> CaCl2 + CO2 + H20</p>

<p>I think it was I and III.</p>

<p>not that one... I think i already missed 3... omg... noooooo</p>