Recent content by kishin7

  1. K

    Need help with simple calorimetry problem

    Are you suggesting that I use 4.184 for the heat capacity of every one? If I do then it wouldn't make sense since that's just making the left side equal to the right side and getting at final temperature of 25.0°C. By the way, is my formula correct though? heat of solution = heat of water...
  2. K

    Need help with simple calorimetry problem

    So here's the problem Conside the dissolution of CaCl2: CaCl2(s) ---> Ca^(2+) (aq) + 2Cl^(-1) (aq) deltaH = -81.5kJ An 11.0g sample of CACl2 id dissolved in 125g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to...
  3. K

    Calculating Angular Acceleration for a Solid Cylinder on a Frictionless Bearing

    M=1.99 kg, R=0.133 m, F=8.142 N I = .5MR^2, T(1) = r x F and T(2) = I x alpha. Solve for I and then solve T(1) using F given and then once you have both plug into T(2).
  4. K

    Moment of Inertia/Acceleration of a Swinging Rod

    I've been at this problem for almost an hour and I know that I'm going in the right direction but I think that I'm using something wrong within the calculations and what not. But well...here's the problem: A rod of length 61.0 cm and mass 1.10 kg is suspended by two strings which are 44.0 cm...
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