<p>how were you supposed to approach taht question? it was the partial pressure in a 2L box or something</p>
<p>@SauceBoss, iirc it was chlorine (if it was asking for an odorless gas?)
there was also one in one of the other sections asking for a neutral, odorless solution… was that sucrose?</p>
<p>I put glucose/sucrose for the odorless question</p>
<p>were there two odorless questions in part 1? lol</p>
<p>for the partial pressure one, one of them was 4L at 1 atm and the other was 1L at 4 atm… so do P1V1 = P2V2 for both and add them and you get 4 atm</p>
<p>I’m pretty sure chlorine has an odor, but I don’t remember that being one of the questions</p>
<p>what bout the stoichiometry question with 8 grams of gas makes 3.2 grams sulfur and oxygen? was it SO3?</p>
<p>^ SO3, correct</p>
<p>oh okay i could be wrong about the chlorine thing, i feel like they kept talking about odorless gases lol
there was one that i put CH4 as the answer for in part 1, did anyone else use it too because i can’t remember what the question was</p>
<p>Yeah i put down FeO and Fe2O3
I think i put down CH4 because its a liquid that does not mix with water
And yeah SO3</p>
<p>what was the question about CH4? I don’t remember anything about mixing with water…</p>
<p>Okay well CH4, i just remember putting that down it was in the beginning of the test ?</p>
<p>why cant CCl4 work?</p>
<p>yeah it was in the beginning, the first section of the 2nd page… i’m not sure if i put CH4 as not mixing with water though, even though it doesn’t</p>
<p>what about the one with Al combining with excess S… was it 2 moles of Al needed to make 1 mole of the product?</p>
<p>I am not sure about the Al S, sorry!
About the 2L box one I put down 4 atm as my answer
There were two boxes, one with a 1 L and one with a 4 L and with some PV=PV calcs, I got 4 atm</p>
<p>yeah, I put 2 moles Al cause it forms Al2S3 or something…</p>
<p>element that is a good conductor in one of its solid form - carbon (think of graphite)
good conductor in solution - HCl (donates H+)
forms a neutral solution that is odorless - sucrose
compound with both covalent/ionic bonding - NH3Br (covalent between N and H’s, ionic between N and Br)
chemical change resulting in increase in entropy - Zn + HCl (boiling of alcohol isn’t a chemical change)
elements combining in different ratios - FeO + Fe2O3 (1:1 vs 2:3)
total pressure after combining two gases (one at 4L/1atm and the other at 1L/4 atm) - 4 atm
pH of NaCl - 7
formula 8 g of gas containing 3.2 g of sulfur - SO3
why the lewis dot structure for CO3(2-) was wrong - missing 2 resonance structures
what statement is supported by kinetic molecular theory - molecules collide with each other/walls of container
how many moles of Al must combine with excess S to form 1 mole of product - 2 moles (2Al + 3S –> Al2S3)
balancing equation with O2 - 9 moles of O2
which one is false about benzene (C6H6) - all atoms are joined by single bonds (there are 3 double bonds between alternating carbons)
gases act ideally at high temp and low pressure - TTCE (negligible volume/interactions between molecules)
never add water to acid - TTCE (the concentrated acid solution would boil/heat up and splash out)</p>
<p>Can anyone explain the partial pressure with 2 L?</p>
<p>box 1 had 1 L of gas at 4 atm, so by P1V1=P2V2, the gas in box 1 would have (4)(1)=P2(2) –> P2 = 2 atm in the 2L flask/box/whatever
box 2 had 4 L of gas at 1 atm, so you get the same 2 atm for P2 in the new 2L box
add them together and you get total pressure of 4 atm</p>
<p>ty brotha.</p>