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Calculated the volume of 1 M solution of HCl needed for 1 unit shift of the pH of the following solutions:
a. 100 mL of 0.01 M solution of weak acid (pKa = 6) and 0.05 M of its sodium saltb. 0.005 mole of sodium formiate and 23 g of formic acid dissolved in 100 mL of water. (pKa of formic acid = 3.75)c. 100 mL of 0.1M ammonsia solution.
The Reaction 2NOCl(g)---->2NO+CL2(g) has rate-constant values for the reaction of NOCl of 9.3x10^-6/s at 350K and 6.9x10^-4/s at 400K. Calculate activation energy for the reaction. What is the rate constant at 435K?
Ammonium carbamate (NH2COONH4) is found in the blood and urine of mammals. At a temperature of 424 K, Kc = 0.080 for the following equilibrium:
what is the molar mass of a gaseous element that Effuses through an opening of a box 1.12 times as fast as argon at the same temperature.
If the photosynthesis portion of the carbon cycle represents the world's capacity for generating biofuels (in addition to supplying food) what percentage of the world's biomass production
The compound MgSO4 is called Epsom salts. How many grams will you need to prepare a bath containing 5.80 moles of Epsom salts? Express your answer using three significant figures.
A 15.00 mL sample of a 0.100 M solution of lead(II) nitrate is reacted with 10.00 mL of 0.170 M sodium chloride. How many grams of lead(II)
The next items refer to the result of mixing 400. ml of 0.10 M NaOH and 100.0 mL of 0.10 M Mg(NO3)2. Reaction as shown goes essentially to completion.
Three solutions 61.0 mL of 0.2 M KNO3; 63.0 mL of 0.3 M Ca(NO3)2; and 69.0 mL of 0.385 M KCl were poured together to make one new solution.
Which of the following is (are) formed in the reaction between propyl hexanoate and methylamine. (must select all products which are formed in this reaction)
X reacts with one molar equivalent of hydrogen in the presence of a palladium catalyst to form 1,2-dimethylcyclopentane. Treatment of X with ozone follwed by zinc in aqueous acid gives a dialdehyde.
If a mixture of solid nickel(II) oxide and 0.11M carbon monoxide is allowed to come to equilibrium at 1500 K, what will be the equilibrium concentration of CO2
8.20 grams of solute in 861 grams of water lower the freezing point to -0.430 degree celsius calculate the molecular mass of the nonionic solutes.
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