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An acid-base titration starts at a pH of 3.4 and reaches an endpoint of pH 8.5.
Describe the type of sample and titrant being used in the titration.
If a protein sample has a molar mass of approximately 14,000 u, what is the expected freezing point depression when 1.00g is dissolved in 50.0mL of distilled water
calculate and compare the enthalpy of monobromination and monochlorination for the given alkyl position
A 10.80-mL sample of sulfuric acid from an automobile battery requires 35.18-mL of 1.62 M sodium hydroxide solution for complete neutralization. What is the molarity of the sulfuric acid? Sulfuric acid contains two acidic hydrogens.
A concentrated sulfuric acid solution is 74.0% H2SO4 by mass and has a density of 1.66 g/mL at 20°C. (MW of H2SO4 is 98.0 g/mol.) The molality of the H2SO4 solution is ?
Calculate the entropy change for 0.5 mol of an ideal gas confined in 2.0L, which expands when the stopcock is opened, and the gas comes in contact
Problem- Given that the average concentration of NaCl in the body is 0.15 M, what is the osmotic pressure of this solution at 20 °C? A) 3.0 atm B) 0.25 atm C) 0.50 atm D) 7.2 atm E) 1.0 atm
Hydrogen gas, H2 , reacts with nitrogen gas, N2 , to form ammonia gas,NH3 , according to the equation 3H2(g) + N2 (g) --> 2NH3 (g) How many grams of NH3 can be produced from 3.96 mol of N2
a 12-liter tank contains helium gas pressurized to 160 atm. what size tank would be needed to contain thi same amount
Decide what lithium diorganocopper (Gilman) reagent is needed to prepare 1, 6-heptadiene from 1,3-dibromopropane.
a reaction is known to be zero order in soci2 and second order in ch3cn. the reaction rate constant is 2.1 x 102 m-1
A 4.60 g nugget of pure gold absorbed 288 J of heat. What was the final temperature of the gold if the initial temperature was 26.0°C? The specific heat of gold is 0.129 J/(g·°C).
how many grams of sodium lactate should be added to 1.00 l of 0.150 lactic acid or to form a buffer solution with
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