Recent content by Glen Maverick

I get it. I was confused when my lab TA emphasized "in the Erlenmeyer flask", so i thought she might mean something else. :)

Homework Statement Calculation of the number of moles of IO3- used in the titration(i.e. in the Erlenmeyer flask): KIO3(s) → K+(aq) + IO3-(aq): balanced eqn of dissolving KIO3 in water 1. Calculate the moles of KIO3 used: Molecular weight of KIO3 = 214.0011 g/mol...

I had my chem lab, and I know that kinetically favoured is realted to fast reaction and so forth, but I can't just define kinetically favoured. Please help me?

I get it. :) What I am also confused about is whether the mass of the solution os 102g or 100g. TA said we ar multiplying the dnesity of NaCl to 100ml(50ml+50ml) for finding heat gained by solution. according to the lab manual, the calculation is saying 102 g. However, I think 100g is the mass...

Homework Statement NaOH(aq) + HCl(aq) ------> NaCl(aq) + H2O(l) 50mL of 1.0M HCl and 50ml 1.0M NaOH was mixed. Total heat is 2826J. If the density of 0.5M NaCl produced in this reaction is 1.02g/mL: a) What is the mass of the solution? b) Moles of water formed c) Moles of NaCl formed d) Molar...

Now I understand it! I was quite troubling with this kind of problems. Sorry for the late reply... Thank you so much for helping me. :) Have a good day!

Thank you. I can see that trial 2 is correct.

Expected value: urgent help needed Homework Statement "Spin-and-Win" is under new management. The new management has created the spinner to the right and now charges $1 per spin. (The person spinning wins the amount pointed to by the spinner.) a) What is the expected value for this...

Thank you so much for checking for me! b - two students having two instruments and the rest have only one. event b:[C(4,1) x C(6,2) x C(4,2) x C(2,1) x C(1,1) divided by 4^6] First student is chosen among 4, and he or she chooses two instuments from 6. Second student also choses 2, but among 4...

Oh! Now I get it. C(4,1) x C(6,3) x C(3,1) x C(3,1) x C(3,1) divided by 4^6 is not right, because if one of the student picks 1 among three, the leftover would be two. So. C(4,1) x C(6,3) x C(3,1) x C(2,1) x C(1,1) divided by 4^6 And Have I got right in the event b?

Thank you to both Stanton and rl.bhat. I was looking for this problem. :)

Combination & distribution Homework Statement Six musical instruments are available for loan. Assuming all are loaned, in how many different ways can these be assigned to the four musicians in the graduate music ensemble such that each instrument is loaned to one musician...

Homework Statement Under what conditions will a thin converging lens form: a) a real image, b) an inverted image, and c) an image smaller than the object? Homework Equations none The Attempt at a Solution I have concluded that: a) the object needs to be outside the focal...

Homework Statement If one immersed the prism in water (nw=1.33), would it be possible to obtain total internal reflection within the prism? Explain. Homework Equations n1sin(θc)=n2sin(90o), where nglass=1.5. The Attempt at a Solution I tried to solve for the unknown angle θc. Total...