<p>i said beaker for that one i think.</p>
<p>I am so angry right now. This has been haunting me as I went to bed last night. On one of the TF questions, it asked a simple question about which atomic weight was higher. Well, I actually read the question(from part I and part II), and I decided that the intermolecular forces(or whatever it was) had nothing to do with atomic weight but with hydrogen bonding so I put false on the second part. And I'm pretty sure that was wrong. Come on, which has a greater atomic weight? How did I miss that?</p>
<p>Can you elaborate on that? What are the two statements? This will help us all.</p>
<p>But a beaker is inaccurate, very inaccurate. And it asked for a 1 Molar solution. How can u put 1 L of water in a beaker? Beakers r too small. wiki says that volumetric flasks r used for making solutions.</p>
<p>Volumetric</a> flask - Wikipedia, the free encyclopedia</p>
<p>H2O has a higher bp than H2S BECAUSE H2O has smaller atomic mass.</p>
<p>TT</p>
<p>So right now here is a list of TF questions I know. Can anyone add more to this list?</p>
<ol>
<li><p>Water boiling point TT</p></li>
<li><p>Temperature KE+PE TT</p></li>
<li><p>HCL dissociation TTCE</p></li>
<li><p>Pressure equiblibrium TTCE</p></li>
<li><p>Diatomic molecules+Linear TT</p></li>
</ol>
<p>
[quote]
Can you elaborate on that? What are the two statements? This will help us all.
[/quote]
[quote]
H2O has a higher bp than H2S BECAUSE H2O has smaller atomic mass.</p>
<p>TT
[/quote]
Those two questions.
The second part was true, it does have a smaller mass. But unfortunately for me, I read the whole thing together, "H2O has a higher bp than H2S BECAUSE H2O has smaller atomic mass." So I was thinking, H20 has a higher boiling point because of hydrogen bonding not because of its smaller mass. So I put false for the second part.</p>
<p>That's the scary thing with these kinds of questions. Happens to me a lot too.</p>
<p>For the question on the pictures of the three instruments:
Titrations=burette
Exact Volumes=Volumetric Pipette
Precipitate=Test Tube</p>
<p>And as for the girl preparing the NaCl solution I think it was pipette because it was the "most precise". There are calibrated pipettes used in lab settings that can measure extremely precise quantities of a liquid. But I'm not sure if Im right.</p>
<p>For the 2400/4400 one, it definititely said "Turn liquid at -20 degrees C into a vapor at 80 degrees C", or whatever the numbers were.</p>
<p>Oh, and for the NaCl/which thing to use, I also remember (though this I'm not as positive about) that it said NaCl salt, not solution, which is what threw me off. Can you use a buret or a pipette with a solid?</p>
<p>Here are some more...</p>
<ol>
<li>Zinc is a better conductor that Phosphorus TT</li>
<li>Argon something about volume and speed or something FF</li>
<li>Only discrete wavelengths, something quantized TT CE</li>
</ol>
<p>I was confused about the question regardingdiscrete wavelengths. I know that hydrogen can only emit certain wavelengths of light, but the question asked whether or not it could absorb those wavelengths, so I put FT.</p>
<p>teenage: that's what I thought too. I changed to beaker after reading the question again.</p>
<p>yeah i put beaker too.</p>
<p>do you remmebr the question of findthign the density with teh water displacement?</p>
<p>the answer was 3.0 right?</p>
<p>Volumetric</a> flask - Wikipedia, the free encyclopedia</p>
<p>A volumetric flask is a piece of laboratory glassware used in analytical chemistry for the preparation of solutions.</p>
<p>Beakers are only for mixing and heating solutions. Measuring water in a beaker isn't practical and i dont think pipettes can hold 1 L or 1000ml. It has to be a volumetric flask.</p>
<ol>
<li><p>Water boiling point TT</p></li>
<li><p>Temperature KE+PE TT</p></li>
<li><p>HCL dissociation TTCE</p></li>
<li><p>Pressure equiblibrium TTCE</p></li>
<li><p>Diatomic molecules+Linear TT</p></li>
<li><p>Zinc Phosphorus conductor</p></li>
<li><p>Argon gas FF</p></li>
<li><p>Water BP + Water lighter than H2S TT</p></li>
<li><p>Light quantized. TTCE</p></li>
</ol>
<p>Come on 7 more to go!</p>
<p>Condensation of gas to liquid is an endothermic process BECAUSE Gas to liquid increases entropy. FF</p>
<p>um...as far as I know condensation is an exothermic process.
it releases heat while vaporization absorbs heat to become gaseous.</p>
<p>edit: crap just read that and remembered that was the question. so yes its ff</p>