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The solubility product of PbBr2 is 8.9x10^-6. Determine the molar solubility a) in pure water, b) in 0.20M KBr solution, c) in 0.20M Pb(NO3)2 solution.
Now take another 37 mL of the 0.50 M pH 6.83 buffer and add 1.3 mL of 1.00 M NaOH. Using steps similar to those above, calculate the new pH of the solution.
100.0 g of nickel at 150 °C was placed in 1.00 L of water at 25.0 °C. The final temperature of the nickel-water mixture was 26.3 °C.
What is the phosphoanhydride bond on the NADH structure? Although NADH and ATP both have phosphoanhydride bonds
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 7.00 nm in diameter? Take the m..
calculate the osmotic pressure associated with 50.0 grams of an enzyme of molecular weight 98,000 g/mol dissolved in 2600 mL of benzene at 30 celsius
Tires in a bike have been filled to a pressure of 53.0 psi at 19.0 deg C. after riding around for a while, the volume of the tire increased by 2% & the temp was now 32 deg C. whats the new pressure in psi
At the start of the experiment, both thermometers record the same temperature. Why does, after 10 min, thermometer B record a lower temperature than thermometer A?
carbonic acid solution with [H_2CO_3] = 0.00735 M is titrated with 0.100 M KOH. Determine the pH of the solution when 70.00mL of OH have been added.
Calculate the flux of CO2 to the atmosphere (in kg/yr), given that its atmospheric concentration is 360 ppm and its atmospheric residence time is 4 years.
analysis of a carbohydrate showed that it consisted of 40.0 c 6.71 h and 53.3 o by mass. its molecular mass was
A 0.0100 L sample of H2SO4 (Sulfuric Acid) was titrated with 0.150 M NaOH. It took 23.3 mL of NaOH from the buret -- that's 0.0233 L -- to reach the titration endpoint.
The atmospheric pressure in the room when the measurement was made was 628 mmHg and the temperature was 36.0 degrees C. What is the density of the gas?
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