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A solution was made by dissolving 4.65 mg of hemoglobin in water to give a final volume of 1.00mL. The osmotic pressure of this solution was 0.00178 atm at 25 C. Calculate the molar mass of hemoglobin, which is a molecular compound and a nonelectrolyte
If the pressure exerted by a gas at 25°C in a volume of 0.032 L is 2.79 atm, how many moles of gas are present?
The reversible chemical reaction A+B C+D with an equilibrium constant of K 7.1.Initially, only A and B are present, each at 2.00 . What is the final concentration of once equilibrium is reached?
What is the specific heat capacity of a metal that has capacity of a metal that has a mass of 25.00 grams and absorbs 1000.0 j of heat in cooling from 80.0 c to 40.0 c?
Calculate how many atoms of potassium A three mole sample of K2S would have and Calculate the current for diffusion-controlled electrolysis
EXPLAIN why at low temperatures, e.g. -80 °C, when HCl is added to 1,3-butadiene the major product is 3-chloro-1-butene. c) EXPLAIN why at +80 °C when HCl is added to 1,3-butediene the major product is 1-chloro-2-butene.
A beaker with 160 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 6.40 mL of a 0.400 it M HCl solution to the beaker. How much will the..
Considering the mixture of the two compounds and range of the melting points, the reason recrystallization was difficult was due to a broad melting point range.
A precipitate of calcium phosphate is in contact with 653.9 mL of water. How many grams of calcium ion are present in the solution
Calculate the final temperature when a 22.0 gram sample of ice at 0oC is placed into a styrofoam cup containing 113 grams of water at 77.1 oC. Assume that there is no loss or gain of heat from the surroundings.
if molarity of a 2000ml solution is 4.0M NaCl, how many moles of NaCl are dissolved in that solution.
if you used 8900 kilojoules you expend in energy in one day to heat 49000g of water at 19 C what would be the rise in temperature.
Calculate the osmotic pressure of each starting solution and that of the mixture, assuming that the volumes are additive and that both salts dissociate completely into their component ions
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