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what is the equilibrium partial pressure of water vapor above a mixture of 44.0 g H2O and 56.0 g CHOCH2CH2OH at 35 Degree C. The partial pressure of pure water at 35.0 degree C is 42.2 mmHg. Assume ideal behavior for the solution.
If aluminum is diffused into a thick slice of silicon with no previous aluminum in it at a temperature of 1100?C for 8 hours, what is the depth below the surface at which the concentration is 1016 atoms/cm3 if the surface concentration is maintain..
The optical rotation of a sample composed of only D-lactose is determined [a]abs = 0.99 degrees. [a]D is known to be 52.3 degrees for D-lactose. If the cell path length was 0.8 dm and the concentration of D-lactose in the sample was 0.17 g/mL,
Consider a cylinder filled with air with a piston and spring arrangement on top. The external pressure is 1 bar, the initial temperature of the air in the cylinder is 25 C.
How many moles of methane occupy a volume of 2.00 l at 50.0*C and0.500 atm? (R=0.0821 atm*L/molxK)
A reverse osmosis plant desalinates 5x10^6 L/day of feedwater containing 1500mg/L of salts yielding 3x10^6 L/day of product water with 75 mg/L of salt. What would the salt concentration be in the brine?
Show how many µL of protein sample you will take and add with the desired volume of DTT and Laemmli buffer to make the right concentration of sample.
Calculate the energy (joules) required to achieve the transition from the ground state to the first excited state for this system.
what is the molar mass of the protein? A solution of 7.50 mg of a small protein in 5.00 ml of aqueous solution has an osmotic pressure of 6.80 torr at 23.1 degrees celcius.
If 5.50 g of the unknown compound contained 0.183 mol of C and 0.367 mol of H, how many moles of oxygen, O, were in the sample?
The vapor pressure of br2(l) at 25C is 228 mm hg. if 2.00g of br2 is usedm what is the final pressure in the flask? will there be liquid in the flask.
what is the molarity of a solution prepared by dissolving 2.06g of NaOH in a volume of 500.0ml?
A helium-filled balloon at sea level has a volume of 2.5 L at 0.989 atm and 33°C. If it is released and rises to an elevation at which the pressure is 0.900 atm and the temperature is 29°C, what will be the new volume of the balloon?
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