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At what pH does the tripeptide, Ala-Val-Cys, have a net charge of -0.8? A. pH = 4.4 B. pH = 6.0 C. pH = 7.6 D. pH = 8.8 E. pH = 10.8
Assuming the density of a 5% acetic acid solution is 1.0 g/ml, determine the volume of the acetic acid solution necessary to neutralize 25.0 ml of .10M NaOH. Also record this calculation on your report sheet.
Dissolved in water to produce a 0.0170 M solution. The pH of the resulting solution is 2.33. Calculate the Ka for the acid.
A solution of potassium chromate is prepared at pH 7.72. Calculate the fraction of the total chromate in this solution that is present as the chromate ion CrO42-.
A gas cylinder that contains argon has an internal volume of 6.88 L. A pressure gauge attached to the cylinder reads 1870 psi (1 atm = 14.7psi) at 20.0C.
the two flask are filled with nitrogen gas and when both are immersed in boiling water the gas pressure inside the system is .5 atm. one of the flask is then immersed in an ice water mixture, keeping the other in the boiling water. calculate the n..
Would the mass of the precipate collected be more, unchanged, or less if the residue was washed with hot distilled, deionized water instead
a balloon is partly inflated with 480 liters of helium at sea level where the atmospheric pressure is 996 mbar.the
what is the temperature of the air inside of the tire when the pressure increases to 29 psi? Assume tire volume is constant.
To prevent tank rupture during deep-space travel, an engineering team is studying the effect of temperature on gases confined to small volumes. What is the pressure of 3.20mol of gas measured at 251 degrees Celcius in a 1.75-L container assuming r..
A solution of 350mg of optically active 2-butanol in 10 mL of water, placed in a 20 cm cell shows an optical rotation of +6 .24 degrees. What is the specific rotation of this compound
A flexible container at an initial volume of 6.13 L contains 8.51 mol of gas. More gas is then added to the container until it reaches a final volume of 18.5 L. Assuming the pressure and temperature of the gas remain constant, calculate the number..
2 tanks xy of gas are connected by a closed valve. tank x is 5 liters and has oxygen gas at a pressure of 24 atm. tank
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