Recent content by ReidMerrill

So the equation would be 3x'' + 1x' + 6x =0 ?

I don't think so.

Suppose a spring with spring constant 6N/m is horizontal and has one end attached to the wall and the other end attached to a 3 kg mass. Suppose the friction/damping constant is 1 N s/m Set up a differential equation that describes this system with x denoting displacement of the mass from...

I did some Google snooping and apparently the pH of a 0.1M solution of acetic acid is 2.88. In that case, how do I raise the pH without lowering the molarity?

For a lab I need to create a 0.1M solution of NaOAc buffer at pH 5 It's been a while since I worked with buffers. I'm struggling to find a way to get both the proper morality and proper pH. My first though was to create a 0.2M solution of acetic acid and titrate it to pH 5 using sodium...

I just wondered if there was supposed to be a trend since they don't appear to follow any pattern.

Is there a period trend for bond enthalpy? Specifically Atom-Hydrogen bonds. Need to find a trend in predicting the bond enthalpy of several atom-hydrogen bonds I calculated using gaussian. Any help would be appreciated, thanks!

I'm doing a computational lab about binding energy and comparing different methods of solvation. What does positive and negative binding energy signify? Half of the places I look say the more positive the binding energy the stronger the interaction between the molecules. Other places say the...

1.6205 is the ppm. That's what the lab manual says to do. EDIT: I see. the ppm x 400 MHz= Hz. I wasn't reading carefully. I'll see if this fixes things

Homework Statement I'm am trying to find out the magnetic susceptibility,XM in order to calculate the number of unpaired electrons in Mn(acac)3 via the Evans Method Homework Equations XM = (477) Δv/(Qv1C) XM= X'm+ XM(metal)+ XM (ligands) Where X'M is the magnetic susceptibilty of just the...

The hydrogens on the two carbons and on the nitrogen are not in the plane.

Oh yeah that rings a bell. For the signma in the place of the paper what would it be since all of the atoms will go from x to -x and y to -y while Z stays the same. Would it be -19+-19+19 (if you consider all of the atoms?) or -1+-1+1

I had σv as the plane in the page and σv' as the one perpendicular to the page. I don't think that should make a difference thought. I'm not sure what the contributions thing is. I was following along with a video of someone doing the same process but with water. And I totally forgot tho...

Homework Statement In lab we synthesised cis and trans copper glycine and we have to use IR to differentiate the two so we have to figure out the number of IR active vibrations for each complex. It's been a year since I did anything with point groups so I'm not sure if I did it right. Homework...

Thanks! I took the lecture for this lab class last year so I forgot about that. That explains why the peak absorption shifts to lower wavelengths as more Cl is displaced by water.