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Illustrate and show calculations how you would prepare 2 liters of a pH 8 buffer using 0.4 M Na3PO4 and 0.5 M HNO3. Explain reasoning at each step of the way ion calculation.
The normal boiling points of CO and SO2 are -192c and -10c, respectively. a) At 25c and 1 atm, which gas would you expect to have a molar volume closest to the ideal value
Arrange these compounds in order of increasing boiling point and explain your reasoning. (assume similar mass) CH3OCH3 CH3CH2CH3 CH3CH2OH 2. Which of the following compounds would have the greater viscosity?
Solid CO2 (dry ice) forms a molecular crystal that sublimes at -78oC. SiO2 forms a network solid that melts at about 1200oC. Which of the following accounts for this striking difference in properties
Salicylic acid C7H6O3 has been suggested as a calometric standard. Its heat of combustion is -3.023x10^3 kj/mol C7H6O3/ from the following data find out the heat capacity of a bomb calorimeter assembly.
an equilibrium mixture of o2 so2 and so3 contains equal concentration of so2 and so3. calculate the concentration of o2
Considering the given equation 2 C8H18 + 25 O2 --> 16 CO2 + 18 H2O in which The combustion of octane produces carbon dioxide and water , determine the mass of water.
What is the phase of the standard states of the following elements and compounds. (a) NH3 (b) Fe (c) N2 (d) Br2
Calculate the molarity of 500.0 cm3 of solution containing 18.5 g of calcium nitrate Ca(NO3)2
some atomic properties depend on the average value of 1r rather than the average value of r itself. evaluate the
You are asked to prepare a standard solution of 10.0 mM of serine at pH 6.34 for a biochemistry experiment. The pI of serine is 5.68. What percentage of the serine in the solution is present as the anion
Calculate the mass of nitrogen dissolved at room temperature in an 94.0 home aquarium. Assume a total pressure of 1.0 and a mole fraction for nitrogen of 0.78.
Suppose the original sample is unknowingly contaminated with a second anhydrous salt. Will the reported percent water in the hydrated salt be too high too low or unaffected by its presence. explain
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