MIaow

Popular questions and responses by MIaow
  1. Chemistry

    At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.56. What is the Ksp of the compound at 22 °C? I have found my [OH-] concentration (3.63x10^-4) but I'm not sure I'm

    asked on April 1, 2012
  2. Chemistry

    Stuck again... "Determine the charge on the complex: diaquadichloroethylenediaminecobalt(III)" I'm having problems even writing a formula for this one! Is it [Co(2)(NH2CH2CH2NH2)Cl]Cl ??? Maybe if I could figure out the formula I'd be better at figuring

    asked on May 7, 2012
  3. Chemistry

    In a particular redox reaction, BrO– is oxidized to BrO3– and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in acidic solution. Two half reactions: 1.) Cu^2+ --> Cu^+ 2.) BrO^- --> BrO3^- Balanced: 1.) Cu^2+ +e^- --> Cu^+

    asked on April 15, 2012
  4. Biochem

    The Na –glucose symport system of intestinal epithelial cells couples the \"downhill\" transport of two Na ions into the cell to the \"uphill\" transport of glucose, pumping glucose into the cell against its concentration gradient. If the Na

    asked on November 2, 2013
  5. Physics

    Could someone please review my answers and tell me if I am on the right track? Thank you! A student drove to the university from her home and noted that the odometer reading of her car increased by 12.0 km. The trip took 18.0 min. (a) What was her average

    asked on August 31, 2012
  6. Chemistry

    Consider the decomposition of a metal oxide to its elements, where M represents a generic metal: M2O3 (s) 2M (s) + 3/2 O2 (g) Given a delta Gf: -770 Kj for the M2O3 0 Kj for the M 0 Kj for the O2 What is the standard change in Gibbs energy for the

    asked on April 6, 2012
  7. Physics

    Could someone please check another one of my answer for me? Thank you! A commuter backs her car out of her garage with an acceleration of 1.40 m/s2. (a) How long does it take her to reach a speed of 2.00 m/s? (b) If she then brakes to a stop in 0.800 s,

    asked on September 2, 2012
  8. Physics

    Would someone please check my work ands let me know if I am right? (We are going to do this as a group but I'd like to attempt it on my own first.) Thank you! Suppose a soccer player kicks the ball from a distance 30 m toward the goal. Find the initial

    asked on September 6, 2012
  9. Physics

    I wondered if someone would check my work concerning an Atwood's Machine. (I am led to believe the answers for these two questions should be the same but I'm not coming out that way.)Thank you! 8.) Caluclate the tension in the Atwood's Machine string for

    asked on September 22, 2012
  10. Chemistry

    Please check a Nernst equation for me? Calculate the cell potential for the following reaction as written at 61 °C, given that [Zn2 ] = 0.800 M and [Fe2 ] = 0.0170 M. Half reactions: Zn-->Zn^2+ + 2e^- (potential= -0.76)(anode) Fe^2+ + 2e^- -->Fe

    asked on April 29, 2012
  11. Chemistry

    Stuck again... "Determine the charge on the complex: diaquadichloroethylenediaminecobalt(III)" I'm having problems even writing a formula for this one! Is it [Co(2)(NH2CH2CH2NH2)Cl]Cl ??? Maybe if I could figure out the formula I'd be better at figuring

    asked on May 7, 2012
  12. Chemistry

    Working on a practice question for finals so I really want to understand how this works: What is the coordination number of mercury in K2[HgI4]? I say that mercury's coordination number is 4 because I^- is a monodentate ligand. Does the potassium affect

    asked on May 13, 2012
  13. Chemistry

    More finals review please... Ag^+ + 2e^- --> Ag E^nought = 0.800V Sn^4+ + 2e^- --> SN^2+ E^nought + 0.154V balanced equation: 2Ag^+ + Sn^4+ --> 2Ag + Sn^2+ E^nought cell = cathode - anode I thought I heard say that I had to flip the "less negative" half

    asked on May 20, 2012
  14. Chemistry

    Got another practice question but I'm really stumped on this one: If the [ZnCl4]^2- ion is diamagnetic what must its structure be and why - octahedral, tetrahedral or square planar? I know that diamagnetic means that all its electrons are paired and that

    asked on May 13, 2012
  1. Physics

    Thank you very much! I wondered if I should switch to km/hr. And, I was SURE I was wrong on B but AMAZED I was right on C. :)

    posted on August 31, 2012
  2. Chemistry

    Thank you for explaining! I think the balancing bit is my fault. I am getting tired and stupid. Time to go to bed and look at this closer in the morning. I thank you for all your help this semester.

    posted on May 20, 2012
  3. Chemistry

    I HAD to have actually heard "flip the less positive" didn't I? When I work it that way it seems to make sense.

    posted on May 20, 2012
  4. Chemistry

    P.S. I have heard that you are either a Gen Chemist or an Organic Chemist. (I am hoping to heck I am an organic chemist! But, I did well in Gen Chem, thanks in part to you.)

    posted on May 13, 2012
  5. Chemistry

    That's okay, I'm sure you're better at it than I am. And you are good at leading me in the right direction; I appreciate that. It'll all work out.

    posted on May 13, 2012
  6. Chemistry

    Thank you again, I really hope you are going to be around this summer for Organic :)

    posted on May 13, 2012
  7. Chemistry

    Thanks so much :)

    posted on May 13, 2012
  8. Chemistry

    YAY! Thanks, that was a tough one. Formula didn't matter so much as figuring out the charge. +1 was it! You were a wonderful help, as always!

    posted on May 7, 2012
  9. Chemistry

    That was it! Apparently it has been WAY too long since I did order of operations but I have refreshed myself now. I should have known better! Thank you for your help.

    posted on April 30, 2012
  10. Chemistry

    Doesn't make sense to me either but I can't figure it out :( The way I arrived at that answer was: E=[.32-(8.3145x334.15)/(2x96285)]3.851 E=[.32-(2778.29)/192570)]3.851 E=(.32-.014427)3.851 E=(.305573)3.851 E=1.177 It's not right but for the life of me I

    posted on April 29, 2012
  11. Chemistry

    That was it! As always, thank you :)

    posted on April 15, 2012
  12. Chemistry

    Thank you VERY much!

    posted on April 7, 2012
  13. Chemistry

    Oh geez, thank you SO much! And so quick!

    posted on April 1, 2012