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A turbine of the Francis type operates with a head of 200 m and flow rate of 3m3/s. The peak efficiency occurs at a head coefficient CH of 9, a flow coefficient CQ of 0.3, and a power coefficient CP of 2.5 (as defined in Section 12.7). Estimate the size of the machine, the maximum power produced, and the speed.
Titration of a Weak Acid with a Strong Base, Find the pH before, at, and after equivalence point of 35 ml of 0.15 M lactic acid with 0.18 M NaOH.
Lactic acid, CH3CH(OH)COOH, has a Ka value of 1.4x10-4. How many grams of lactic acid must be added to make 151.0 mL of solution with a pH of 2.21
Write about project quantum chemistry - High Resolution Rotation Vibration Spectrum
assuming no heat loss, and that the specific heat (capacity) of water is 4.184 J/g*K, what is the heat capacity of the copper in J/K?
The double-replacement reaction between silver-nitrate and sodium bromide produces silver bromide, a component of photographic film.
compute the activation energy for the flashing process. when at 29o c the average rate is 3.3 flashes every 10 seconds
If a sample of effuses through a tiny hole in 38 seconds. Explain what must be the molar mass of a gas that requires 64 to effuse under identical conditions
The total molarity of acid and conjugate base in this buffer is 0.100 . A student adds 6.40 of a 0.340 solution to the beaker. How much will the pH change? The of acetic acid is 4.760.
Presume some HO2 with a preliminary concentration of 2.0 × 10-8M could be confirmed at 25 °C. Compute the concentration that would remain after 1.0 s, presuming no other reactions take place.
A pipette is used to add 32 mL of 0.2 M Pb(NO3)2 to a 261.0 mL solution of 0.3 M NaF. Determine the equilibrium concentration of Pb2+(aq) in the final solution. Ksp(PbF2)=3.6E-8.
You want to prepare a solution that is 0.200m in Na2CO3. How many grams of the salt must you add to 125g of water? What is the mole fraction of Na2CO3 in the resulting solution?
Question- An aspirin tablet weighing 0.445 g is dissolved in 28.1mL of water. The concentration of the aspirin in the solution is found to be 0.056 M. Calculate the % aspirin in the aspirin tablet.
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