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Using a solution of (HOC2H2)3NHCl, solution in which Kb, ((HOC2H2)3N) = 5.9 × 10-7 then determine what is the pH of a 0.010 M triethanolammonium chloride,
Silane is a colourless, flammable gas with a sharp, repulsive smell, somewhat similar to that of acetic acid it is observed that a 100 g of the SiH4 contain 12.55g of H and 87.45g of Si . find the ratio of Si to H and express your answer in amu?
Write a mechanism for the reaction of an alkyl halide with alcoholic silver nitrate which depicts the type of substitution which occurs. Explain how this mechanism accounts for the relative rate of reactivity of primary, secondary and tertiary hal..
What will be the final temperature of a 15.0g sample of water that is heated with the addition of 4.2kJ at 18 0C
a metal object with a mass of 19g is heated to 96 degrees C, then transferred to a calorimeter containing 75 g of water at 18 degrees C. The water and metal object reach a final temperature of 22 degree C.
If a buffer solution is 0.270 M in a weak base (Kb=7.5 x 10^-5) and 0.410 M in its conjugate acid, what is the pH?
How many milliliters of a stock solution of 2.00M KNO3 would you need to prepare 100.0 mL of 0.150M KNO3?
A spherical ball of lead has a diameter of 6.5 cm. What is the mass of the sphere if lead has a density
An amphoteric compound exhibits a. acidic properties b. acidic and basic properties c. metallic properties d
Calculate the change in energy deltaE that occurs when 0.5L of liquid water is vaporized
if an athlete expends 1850KJ/h (kilojoules per hour), how long does he have to exercise to work off 1.0lb of body fat?
How many moles of dinitrogen tichloride correspond to 645 mg of dinitrogen trichloride? How many nitrogen atoms would be required to produce that amount of dinitrigen trichloride.
Barium chloride + sodium carbonate --> a) balanced formula equation b) complete ionic equation c) net ionic equation
how many milliliters of .1229 M NaOH are needed to completely neutralize 50.00mL of .1012M H2SO4 solution
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