Recent content by p3t3r1

Hi there, this is a not a homework question but rather question about the theory behind this problem. Say if someone asks you to calculate the number of moles in 20 ml of a 1M NaOH solution, I would usually say it is going to be 20 mmol as you do 20 ml/1000 ml/L x 1M = 0.02 moles = 20 mmol...

Thanks for the quick reply. So let me get this right, if I include a histogram and it looks normal for the baseline measurments, that means I have no background contribution? I thought that was excluded by doing a student t-test between the treatment group and the control group? Thanks!

Hey folks, I am trying to write a paper and my suprevisor told me to make baseline measurments of the two groups and plot a histogram for each group and include that in my results. Problem is, I don't know that purpose of this histogram is and I don't know what to write. I mean yeah histogram...

We know that Vmax depends on enzyme concentration since Vmax = k2[E] However, what I have trouble grasp is that why Km does not depend on enzyme concentration if Km is the substrate concentration where V = 1/2 Vmax. If you increase Vmax, shouldn't Km increase as well since it is dependent on...

It was really in relation to this problem Calculate the values of delta U, delta S, and delta H for the following process 1 mole of liquid water at 25 c and 1 atm to 1 mole of steam at 100 c and 1 atm I figured out the delta H for the entire process. then I tried to figure out delta...

So the equation \Delta H = \Delta U + \Delta (PV) I know you can transform this equation into the form \Delta H = \Delta U + \Delta (nRT) I commonly see the previous equation transferred into the following \Delta H = \Delta U + \Delta n(RT) What I want to know...

I am kind of confused by the conflict of the following two concepts. If I understood correctly, internal energy of a system is independent of the volume occupied by the gas molecules. This is because the gas molecules are assumed to be ideal and therefore have no intermolecular interactions...

The stain is just dirt I think. What cleaner to go with scrubbing? Thanks.

Here is my situation. I got a cheap mop (traditional style mop with strings )from the dollar store. Is crap. I need to clean my white tiled floor and my current mop isn't doing a good job. What mop (under $20) do you guys recommend? I am also using the comet powder with bleach but still got...

The questions are not really straightforward. They are the type of questions you would find in end of chapter conceptual questions in a standard undergraduate physics textbook. They are usually tricky questions involving you to manipulate equations, usually several at once and sometimes...

Hello in my physics program at Trent university (Canada) we have replaced written midterms with interactive tests where we are given a remote and multiple choice questions on the slideshow. For each question ( all conceptual) 1 minute is given per question (5 choices per question). Each test...

I solved this question a bit differently from the textbook's solution manual and got a very different answer. I am wondering if this solution is sound? Thanks.

Oh, yeah that would make sense. Is quite odd how two different things are exactly the same when you integrate them. Thanks.

Cause the answer is suppose to be 1/2(tanx)^2 -ln(secx)

I don't see what I am doing wrong in this. The answer I got is obviously not right. Appreciate any help. Thanks!