Saturday
November 22, 2014

Posts by Roseanne


Total # Posts: 9

math
Two fraternities, Sig Ep and Ep Sig, plan to raise money jointly to benefit homeless people on Long Island. They will sell Yoda vs. Alien T-shirts in the student center, but are not sure how much to charge. Sig Ep treasurer Augustus recalls that they once sold 70 shirts in a ...
October 23, 2012

math
You have just isolated a new radioactive element. If you can determine its half-life, you will win the Nobel Prize in physics. You purify a sample of 2 grams. One of your colleagues steals half of it, and eight days later you find that 0.1 gram of the radioactive material is ...
October 21, 2012

Business math
Meg's pension plan is an annuity with a guaranteed return of 3% per year (compounded quarterly). She would like to retire with a pension of $50,000 per quarter for 10 years. If she works 22 years before retiring, how much money must she and her employer deposit each ...
October 21, 2012

chemistry
thanks! it looks like i was calculating the cube and not the cube root!
November 27, 2010

chemistry
i tried solving it on my own but im confused by the steps and when i calculate i dont end up with 0.00202. please help!
November 27, 2010

chemistry
Calculate the molar solubility of MX2, if the Ksp=3.3x10^-8 i already asked this but im confused about one of the steps. Ksp = (x)(2x)^2 = 4x^3 = 3.3X10^-8 x = solubility = 0.00202M. but i dont understand do i substitute the x in 4x^3 3.3X10^-8 and then divide by 3.3X10^-8. or...
November 27, 2010

chemistry
that helped a lot, thanks!
November 24, 2010

chemistry
Calculate the molar solubility of MX2, if the Ksp=3.3x10^-8 how can i solve this problem?
November 24, 2010

chemistyr
Calculate the molar solubility of MX2, if the Ksp=3.3x10^-8 how can i solve this problem?
November 23, 2010

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