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(a) To a 100 mL volumetric flask were added 4.80 g of sodium monohydrogenphosphate monohy-drate and 8.00 mL of a 6.00 M aqueous solution of hydrochloric acid, and the flask was filledto the calibration mark with water. What were the equilibrium concentrations of H3PO4,H2PO-, HPO-2, PO-3, and H+ in the resultant solution? Ka1 = 7.1x10-3, Ka2 = 6.3x10-8, and Ka3 = 4.2x10-13 for H3PO4.
(b) Is the resultant solution in Part a above a buffer solution?
If you used 8,400 kilojoules you expend in energy in one day to heat 49,000 grams of water at 18 degrees celcius, What would be the rise in temp?, and What would be the new temp of the water?
For the blanced equation, shown below, What would be the limiting reagent if 67.6 grams of H2S were reacted with 55.9 grams of O2. 2 H2S (g) + 3 O2 (g) --> 2 SO2 (g) + 2 H2O (g)
Give the major product of the following reaction: 1-butene with Br2 in Low concentration. I have tried 3-bromo-1-butene
So hardly change with temperature, determine the temperature in K at which the spontaneity of this reaction changes.
what is the concentration of the dye in a solution with a percent transmittance reading of 45.8% at 640 nm
Give a physical explanation of why the intrinsic viscosity and the specific viscosity divided by the concentration need
Suppose of nickel (II) bromide is dissolved in of a aqueous solution of potassium carbonate. Calculate the final molarity of bromide anion in the solution
The data below were taken to calibrate the instrument. An unknown protein sample gave an absorbance of 0.867. Calculate the mass (micrograms) of protein in the unknown.
What is the formal charge on the singly bonded oxygens in the Lewis Structure for the carbonate ion
A solution that has a K+ concentration of 5.00ppm is to be prepared from solid KCl. Assuming a solution density of1.000g/mL how many miligrams of KCl must be added to make 1.00L solution?
Combine the above two equations with that for the formation of liquid water and use addition and/or subtraction(i.e. Hess's Law) to arrive at the equation for the formation of magnesium oxide.
The contents of one 80. lb bag of topsoil will cover 30. square feet of ground to a depth of 1.7 in. What number of bags are needed to cover a plot that measures 600. by 700. m to a depth of 1.5 cm.
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