<p>i think they gave -285. in actuality it is -286.1 or something.</p>
<p>I concur, rb9109.</p>
<p>cool.</p>
<p>For the water reaction you are talking about, I am sure they gave us that 1.00 mol of water formed is -285. They what would be released for .500 mol, so answer is 140.</p>
<p>does anyone remember the answer to the one about modern atom theory and what was correct or something? it was in the beginning.</p>
<p>what was the one with the “what accounts for the huge change…” in… something with pressure? was it condensation?</p>
<p>change in PV = condensation</p>
<p>Bohr model = equally spaced energy levels</p>
<p>Atoms are indestructible is so not modern.</p>
<p>really? crap got that wrong… (atom one) what were the choices again??</p>
<p>Well, I don’t remember crossing all the other answers off so I’m only 90% sure. </p>
<p>But aren’t atoms made of subatomic particles that are made of gluons/quarks? (Physics people, help?)</p>
<p>And the Ancient Greeeks are the ones that though atoms were indestructible, no?</p>
<p>so whats the answer to the atom one?</p>
<p>that’s the right answer but i just want to remember what i chose… haha</p>
<p>I put atoms are indestructible as the answer. Remember, modern atomic theory includes nuclear physics - radioactivity, fission = destroying atoms to make new ones.</p>
<p>i said indestructible…i studied nuclear energy all last night and there was a section on how during a certain type of fusion some matter is converted to energy, the way einstein predicted…or something</p>
<p>i am sort of overtired. </p>
<p>also don’t we use bohr’s energy levels (n=whatever…or is that different) and quantized energy packets in flame tests and line spectra?</p>
<p>was the question specifically stating bohr in the question</p>
<p>no it didnt mention bohr</p>
<p>i dont evn remember… :(</p>
<p>It definitely didn’t… I think that it just said ‘energy levels.’</p>
<p>the question said “which is part of the Bohr theory of the atom” right?</p>
<p>i think it said which of the following is not true in modern theory of the atom</p>
<p>or something along those lines.</p>
<p>did anyone get CH4 (i think) for a percent mass one? i cant remember if that was what i got or something else. lol. does anyone remember? i dont remember the original percents. </p>
<p>Also did anyone get Pb(??oranotherelement)2(OH)3</p>
<p>PF3 is trigonal pyramidal just like NH3. It cannot be trigonal planar due to the lone electron pair.</p>
<p>clicheusermame57, I got Pb2(OH)3 for one of the questions. That was a really weird reactions too.</p>
<p>iin77, the question did not mention Bohr.</p>