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What is the PH of a 100 mM solution of PIPES if the pKa is 6.76?
What is the PH of a 250 M solution of TRIS if the pKa is 8.08?
A 100 mM solution of a weak organic acid has a PH of 3.6, What is the pKa of the acid?
SHow calculations
Why He reasoned that the resulting molecular weight would still be within 2% of the value he would have obtained if he had measured the volume of the flask in the laboratory. Explain was this assumption correct?
heat flows measured in this experiment were actually not for simple neutralization of a proton and hydroxide ion as
identify the following as elements or compounds a nh3 b n2 c co d co and e he. give the numbers of protons and
The boiling point of another member of this homologous series was found to be 309 . What is the likely molecular formula for this compound
using activities calculate the ph of a solution containing 0.010 m naoh plus 0.012 m lino3. what would be the ph if you
The total pressure of the container after the water condenses (5C) is .857 atm. What are the partial pressures of the 4 gases at 5C. e)What was the temperature of the container in Kelvin before it was cooled to 5C?
what sort of interaction occurs between adjacent alcohol molecules? and what sort of interaction occurs between
Determine freezing point of solution which contains .31 mol of sucrose in 175g H2O. kf=1.86 degreesC/m
if the pure vapor pressures of benzenec6h6 and toluenec7h8 are pben94.6 torr andptot 29.1 torr what are the mole
Substance A is a gray solid that consists of an alkaline earth element and carbon; the m% C in substance A is 37.5%. It reacts with substance B to form substances C and D. 4.0 x 1016 formula units of substance A weighs 4.26 micrograms.
An average human adult takes about 15breaths per min and exhales 23ml of co2 with each breath. If your trapped in a cave with pressure .963atm and 11C and your only source of oxygen is a breathing device containing 1kg of KO2 , how long do you hav..
Question- A 75.5 mL aqueous solution contains 0.320 mol of KOH and is 20.0 % by mass KOH. Calculate the density (kg/m3) of the solution. Illustrate the density computation in details
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