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A standard serum sample containing 102 meq/l chloride was examined by coulometric titration with silver ion, the subsequent results were obtained for a series of titrations: 127.2 ;128.4; 127.1; 129.0; 128.1. Compute the mean value the median value, the standard deviation as well as the relative standard deviation.
Freon-12 is utilized as a refrigerant in central home air conditioners. The rate of effusion of Freon-12 to Freon-11 molar mass= 137.4 g/mol is 1.07:1. Explain the formula of Freon-12 is one of the following- CF4, CF3Cl, CF2Cl2, CFCl3 and CCl4. Ex..
The state function to describe a particle on a sphere is given as Ψ=2sin^2(?)+cos?(θ).calculate the expectation value of its angular momentum about the z-axis, energy and the square of the total angular momentum L^2.
What volume of a 0.110 M NH4I solution is required to react with 923 mL of a 0.480 M Pb(NO3)2 solution? b. How many moles of PbI2 are formed from this reaction?
If 5.97 ml of a solution contains 2.54 mg of sodium ion, What is the molarity of the sodium chloride solution
An inventor designs a new heat engine that can be modeled on the Carnot cycle. The working gas in the heat engine is 1 mole of helium. The isothermal expansion results in the internal volume changing from 1 L to 3 L
Sulfur dioxide is released in the combustion of coal. Scrubbers use aqueous slurries of calcium hydroxide to remove the SO2 from flue gases
what is the maximum amount of P4S10(444.545 g/mol) which could be formed from 17.12 g of P4 (123.895 g/mol) and 0.137 mol of S8 (256.52 g/mol).
Chlorous acid, HClO2, has a dissociation constant of Ka = 1.20 * 10^(-2). Assume that you have a 0.0755 m solution of this acid and calculate the concentration of H+ cations in the solution and degree of dissociation for a solution of the acid
Assuming levels of atmospheric CO2 are 390 ppm CO2, what is the pH of rainwater in equilibrium with the atmosphere for the pre-industrial atmospheric CO2 concentration of 280 ppm,v
a vertical cylinder contains v moles of an ideal gas and is closed offby a piston of mass m and area a. the
Suppose the maxium pressure the vessel can safely with stand id 1.60 atm. what is the maxium temperature in K the gas can have before its pressue might burst the vessel
Which of the following molecules would be expected to exhibit hydrogen bonding? a.methane b. hydrogen bromide c. ethanoic acid (acetic acid) d. hydrogen sulfide
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