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Question- What volume of 0.0500 M sodium hydroxide should be added to 250. mL of 0.100 M HCOOH to obtain a solution with a pH of 4.50? [Ka(HCOOH) = 1.7 × 10-4]
Express your answer using two significant figures.
A sample of gas occupies a volume of 400 mL at 0.740 atm and 70 oC. Calculate the pressure of the gas if its volume is changed to 360. mL while its temperature is held constant.
Elucidate why nonafluoro-2-methyl-2-propoxide is a much weaker base than tert-butoxide? Explain how do you account for the difference in acidity between Meta and para-nitrophenol
Which protein(s) will bind tightly to CM Sephadex (a cation exchange resin) if loaded onto the column in a sample buffer whose pH is 7.0
Calculate the volumetric size of a water molecule in vapor, assuming 1 mole of the vapor occupies 22.4 L, as if the vapor were an ideal gas
A drug is metabolized in the body by a first order rate process. If the half life for this drug in the body is two days. If 100 mg is taken define how much remains after 5 hours
If 5.0 mL of . 85 M bleach solution is combined with 45.0 ml of .1 mM dye soultion at 30 degrees celcius, what will bre the therorectical concentration of dye in the reaction mixture after 60 seconds
Find out the amount of heat generated by the shuttle, in kilojoules, if it is carrying 209.0 kg of methyl hydrazine in its thruster. Presume that methyl hydrazine is the limiting reactant
Problem- What is the product of pentose phosphate pathway. Pentose phosphate pathway is most active in what cells. Why
When the flask is allowed to cool the vapor condenses and aire again refulls the flask. Re weighing the flask and figure out the the wight of the unknown vapor which filled the flask during the boiling. Explain why it is not necessary to know the w..
indicate the compartment (A or B) that will increase in volume for each of the following pairs of solutions separated by a semipermiable membranes
At 25 C, the standard hydrogen electrode (SHE) has a half-cell potential that is defined to be 0.00 volts. If the pH is increased at this electrode (keeping everything else the same), at what pH will the half-cell potential be equal to -0.337 volt..
Identify the longest, shortest, strongest and weakest bond out of the following: a triple bond, double bond, a single bond carbon attached to methyl groupCH3- CH2- CH- CH3 | CH3 and a single bond between a doubly bonded carbon attached to methyl g..
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