<p>Then it must be D ( For boiling point ) :P</p>
<p>For the 2 Litres of H2 question - Hydrogen is the limiting agent so remaining hydrogen should be zero?</p>
<p>For the hydrogen and oxygen thing. I believe it said if you have 4 L of hydrogen and 3 L of oxygen, and then then it is ignited, and the reaction goes to full completion, what reactant will remain.
So
2H2 + O2 → 2H2O
So stoichmetry says that hydrogen is the limiting reagent. All of the hydrogen will be consumed, and it will consume 2 liters of oxygen, thus 1 liter of oxygen remains.</p>
<p>I have no idea, but boiling point was at D, right?</p>
<p>did you get 16.8 L for one of the multiple choice. I believe it was describing a situation in which you had a 4:3 (reactant:product molar ration). We were given one mol of recatant. So I divided the product by 4 and then * 22.4 L to get 16.8 L</p>
<p>I think Hydrogen is the limiting reactant in that question so zero moles / liters will be remaining?</p>
<p>did one of the t/f have to do with water being bent or something? or am i just imagining something? i feel like i remember a linear/bent question in the t/f section</p>
<p>trollaunty, hydrogen is the limiting reactant. that’s why there’s excess oxygen</p>
<p>oh and can someone please reply if the k and h20 t/f question was t t ce?</p>
<p>The question was asking amount of Oxygen left? ■■ :P</p>
<p>did you get 16.8 L for one of the multiple choice. I believe it was describing a situation in which you had a 4:3 (reactantroduct molar ration). We were given one mol of recatant. So I divided the product by 4 and then * 22.4 L to get 16.8 L</p>
<p>yeah i remember 16.8 for something</p>
<p>lol sorry im going to repost my other questions cause i need to know if i need to cancel my score:
can someone please reply if the k and h20 t/f question was t t ce?
did one of the t/f have to do with water being bent or something? or am i just imagining something? i feel like i remember a linear/bent question in the t/f section
oh and if you remember any t/f pleasee tell mee</p>
<p>I THINK it was</p>
<p>H20 is a linear molecule BECAUSE the O-H bond is polar
And K reacts with H2O to created H2 gas BECAUSE K removes an electron from H+.</p>
<p>First one, F,T
Second one T,F</p>
<p>yes i dont remember the other part but i do remember that i looked at h20 is a linear molecule and immediately false-d it. </p>
<p>and ohh my bad k removes a PROTON from h20 not an electron, silly me!</p>
<p>if you rmr any more t/f questions, please lmk!</p>
<p>Curve predictions?
Same as usually, -3 is 800?</p>
<p>also did anyone use the latest collegeboard sat2 book because maybe that has updated curve (approx)</p>
<p>were there any True Trues (not ce). Those are always confusing for me</p>
<p>N2 was the linear thing right?
the choices were N2, CO2, CCl4, and i forgot the rest</p>
<p>also, for the exothermic graph, is E1 and E2 = activation energy? </p>
<p>which one was the one that makes yellow flame? I put copper.
choices were potassium, copper, and I forgot the rest. </p>
<p>I’ve only taken regents chem course, so I’ll be expecting my score to be near 600s :(</p>
<p>sodium is yellow flame
co2 is linear becuase it has 180 degrees bond angles</p>
<p>according to the barrons book, a linear molecule has 2 atoms attached to a central atom EX: BeF2</p>