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If a 0.2mg/mL solution of hemoglobin gives an absorbance value of 1.0, what concentrations will give absorbance values of 1.5, 0.5 and 0.1?
Describe how you would make 2mL of the solutions that you described in the above using a 1.0 mg/mL solution of hemoglobin and a buffer to dilute it with.
propanol (p*1 = 20.9 torr at 25 °C) and 2-propanol (p*2 = 45.2 torr at 25 °C) form ideal solutions in all proportions. Let x1 and x2 represent the mole fractions of 1-propanol and 2-propanol, respectively
What conceptual error did he make? Determine the correct empirical formula for this compound.
Methyl orange is an indicator that changes color over a range from pH = 3.1 to pH = 4.4 . What is Ka of methyl orange
Reversible adiabatic processes are isentropic. Are isentropic processes necessarily reversible and adiabatic?
An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the temperature was 295k and volume of hydrogen gas collected was 35.6 mL. The calculated value of R was 82.1 mL atm K^-1 mol..
Calculate the overall relative standard deviation, the relative standard deviation of the method, and the relative standard deviation of the sampling process.
What volume of gaseous chlorine at STP would you need to obtain a 250.0 g sample of gas
Why or Why not and provide cathode-anode half reactions? How fast is the corrosion occurring?Do we have enough information to answer this question? If not, what additional information is needed?
what is the chloride concentration ppt (W/V) of you sample? (include a standard deviation in your result) The standard deviation for the electronic balance used to weigh the AgCl is 0.15 mg.
A 128.2-mL sample of a 0.15 M solution of H3PO4 is titrated with 0.18 M NaOH. What volume of base must be added to reach the third equivalence point
During a standarization of sodium hydroxide solution, it takes 12.35mL of 0.100 M HCl(aq) to neutralize a 25.00 mL sample of the NaOH(aq) solution. What is the concentration of the NaOH(aq) solution?
If 18.5 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia.
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