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Calculate final pH resulting from the addition of 5.0 mmol of strong acid to the buffer solution made from 0.150 L of 0.50 M NH4Cl and 0.100 L of 0.25 M NaOH. pKa(NH4+)=9.25.
Note from the following table that the increase in atomic radius in moving from Zr to Hf is smaller than in moving from Y to La. Atomic Radii) Sc 1.44 Ti 1.36 Y 1.62 Zr 1.48 La 1.69 Hf 1.50 suggest an explanation for this effect
Its minimum angular momentum about that axis is h. In classical terms, how many revolutions per second do the H atoms make about the axis when in that state?
the rate constant for a reaction is 7.7 x 10^-3 s^-1 at 25 C, and the activation energy is 33.6 kj/mol. what is k at 75C
At equilibrium system contains 1.00 mol N2 and 1.38 mol H2 and 0.200 mol NH3 in a2.0 litter container. Define what is the value of K
Consider the reaction with the rate law, Rate = k[BrO3-][Br-][H+]2 By what factor does the rate change if the concentration of BrO3- is tripled and that of Br- is tripled? Just put in the number as a whole number or fraction.
what does it mean to say that the ions of an electrolyte behave independently of one another when the electrolyte is
Draw the structural formula of an alkane that has eight carbons and only primary hydrogens.
a sample of air contains 72.75nitrogen 26.45 oxygen 0.05 carbon dioxide and 0.75 argon byvolume. how many molecules of
For the elements scandium through manganese, what is the highest oxidation state equal to. A) none of the above B) the total number of 4s, 3p, and 3d electrons C) the principal quantum number of the period D) the number of 3d electrons E) the tota..
The specific heat capacities of the liquid and gas are 0.995 J/g.K and 0.622 J/g.K respectively. How much heat is required to convert 2.500 kg of solid SO2 at the melting pt. to a gas at 60 deg Celsius
Find the velocity of an electron emitted by a metal whose threshold frequency is 2.47 x 10^14 s^-1 when it is exposed to visible light of wavelength 5.02 x 10^-7 m
Commercially available concentrated sulfuric acid is 18.0 M H2SO4. Calculate the volume of concentrated sulfuric acid required to prepare 2.80 L of 0.275 M H2SO4 solution.
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