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1. At 0oC degrees calculus, Kp= 4.1 x 10-25 for the reaction: Na2SO4 10H2O(s) ? Na2SO4 (s) + 10 H2O (g)
Calculate the equilibrium pressure of the H2O vapour at both 0oC and 25 oC. The value of ?H is 522.0kj/mol, why may be assumed constant over the temperature range of interest.
What molar ratio of sodium acetate to acetic acid should be used to prepare a buffer with pH = 4.5? Ka acetic acid = 1.8 x 10-5.
calculate the amount of heat transfered when 24.0 g of CH3OH decompose at constant pressure. delta H is 126.4 kJ
A galvanic (voltaic) cell consists of an electrode composed of chromium in a 1.0M Chromium(II) ion solution and another electrode composed of silver in a 1.0M silver ion solution, connected by a salt bridge.
25.00 ml aliquots of thiis solution was titrated with monoprotic strong base NaOH (0.0800 M). The titre volume of NaOH was 40.00ml. Calculate the molecular weight of H2A.
It takes 47 mL of 0.124 M KOH to neutralize 47.8 mL of H2SO4 solution. What is the concentration of the H2SO4 solution? Answer in units of moles/liter
It gave a mixture of MgO and ZnO that had a mass of 1.409g. What mass of An was there in the original mixture?
Identify the orbitals to which a 4d electron may make an emission transition in the hydrogen atom and determine the dissociation energy of the molecule
Calculate the minimum energy that a bird of mass 25 g must expend in order to reach a height of 50 m.
show the photoelectron spectrum of N2.Assign short and long progression band.. which one is adiabatic band. give your explanation on basis of FCP. No google copy- paste thing please.
A portable electric water heater transfers 255 watts (W) of power to 5.5 L of water, where 1 W = 1 J/s. How much time (in minutes) will it take to heat the 5.5 L of water from 24 degrees C to 41 degress C? (Assume that the water has a density of 1..
What is the concentration of A^3- ions at equilibrium for a 0.10 M solution of a hypothetical triprotic acid H3A, with Ka1 = 6.0 x 10^-3, Ka2 = 2.0 x 10^-8, Ka3 = 1.0 x 10^-14 ?
A scientist wishes to compress 50.0 ml of ammonia gas at normal atmospheric pressure to a volume of 1.0 ml. What pressure in atmospheres is necessary?
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