Recent content by meganw

Homework Statement (a) If the resistance of the resistor in the figure below is slowly increased, what is the direction of the current induced in the small circular loop inside the larger loop? (b) What would it be if the small loop were placed outside the larger one, to the left? Homework...

Homework Statement You have a 10.4g mixture of sugar (C12H22O11) and table salt (NaCl). When this mixture is dissolved in 150g of water the freezing point is found to be –2.24 degrees centigrade. Calculate the percent by mass of sugar in the original mixture. Homework Equations delta...

"Plating" Metal - Cathode or Anode? Homework Statement You want to plate out nickel from a nickel (II) nitrate solution onto a piece of metal inserted into the solution. Should you use copper or zinc or can you use either of these metals? Homework Equations Standard Reduction...

Awesome, thanks!

If someone drank botulinum toxin, would they die? My friend and I have a bet. I say yes. (note we're not actually going to drink it, we are both chem and bio geeks though and I say yes and he says no.) I think you'd die almost instantly, right? He says you wouldn't because its the same...

What is u? and why do you have PV in the G equation? I thought the one two equations were: G=-RTln(K) and G=H-TS

Homework Statement "Which is the denser phase, monoclinic or rhombic sulfur? Homework Equations Density = Mass/Volume... The Attempt at a Solution How can you tell density from a phase diagram?? Thanks! =) -Megan

Hmmm...then how would I relate the temps if they are not final? What else would I need to do?? :-/

Homework Statement A 19.2 g sample of ice at -10.0°C is mixed with 100.0 g of water at 74.9°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities of H2O(s) and H2O(l) are 2.08 and 4.18 J g-1 °C-1, respectively, and the enthalpy of...

Homework Statement In Breckenridge, Colorado, the typical atmospheric pressure is 520. torr. What is the boiling point of water (ΔH = 40.7 kJ/mol) in Breckenridge? What pressure would have to applied to steam at 331°C to condense the steam to liquid water? Homework Equations Not...

And wait, doesn't it say that the tetrahedral would cancel out? "Tetrachloromethane The top image show the bond electron density and the bottom image the molecular dipole m = 0 D"

Great link! Also, I have another question: 1) H3COCH3 H3CCH2CH3 It says that the first one has the higher boiling point because of dipole forces. Is there some sort of greater dipole between the C and the O? It looks like it might cancel out though? 2) C2H5OH CH3OCH3 Here, would...

I'm sorry I don't get the last part of what you said. Do you think you could explain? =) Thanks!

Homework Statement Determine whether each of the following molecules is polar or nonpolar. (Please note that lone pairs have been omitted for simplicity!) H I - C - I H Homework Equations Electronegativity, Polarity, Dipole moments The Attempt at a Solution It...

Do hydrophobic tendencies shape the molecules? Or is it just the polarity/charge? What are the types of reactions to join monomers? And I think side chains is a good idea. Protein side chains are the R groups, right? And then the 4 nitrogenous bases could be considered the sidechains of...