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Describe any three types of EDTA titrations.
What is the absorbance of solution B if it was prepared by taking 50 mL of solution A and diluting it to the mark in a 250 mL volumetric flask
A spring loaded piston cylinder device is initially filled with 0.2 lbm of an R-134a liquid vapor mixture whose temperature is -30 deg F and whose quality is 80 percent. The spring constant in the spring force relation F=kx is 37 lbf/in
What is the theoretical yeild of NO2 from the reaction of 43.9 g of NH3 with 258 g of O2?
If an athlete weighs 133lb and has 15.0\% body fat by weight, how many pounds of fat does the athlete's body contain
What is the wavelength in micrometers of a photon emitted from a Hydrogen electron relaxing from the
The specific heat of toluene, C7H8, is 1.13 J/g K. How many joules of heat are needed to raise the temperature of 50.0 g of toluene from 12.0°C to 30°C?
What concentration of NH3 is needed to lower the Cu2+(aq) to 6.4 x 10-14M in a solution that was originally 1.43 x 10-4 M in Cu2+(aq). Assume that there is no volume change as NH3 is bubbled through the solution
Determine how much silver ion(Ag+) is left in solution if you mix 0.10 mole of silver nitrate AgNO3 with 0.20 mole of sodium hydroxide NaOH to make a one litre solution.
antacids which contain CaCO3 react with stomach acid to the equation . it gives the eq but I cant type it. what is the mass of stomach acid that reacts with 1.00 grams CaCO3 ?
The half-life for the first-order reacion of HCl with ethylene is 15.4 s when the initial concentration of HCl is 0.67 M. What is the rate constant for this reaction?
Calculate kp and kc for the dissociation.
A solution of an unknown nonvolatile electrolyte was prepared by dissolving 0.250 g of a substance in 40 g of CCl4. The boiling point of the resultant solution was 0.357 degrees Celsius higher than that of pure solvent. Calculate the molar mass of..
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