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The solubility product of PbBr2 is 8.9x10^-6. Determine the molar solubility in 0.20M Pb(NO3)2 solution
Consider the following balanced thermochemical equation for the decomposition of the mineral magnesite: MgCO3(s) => MgO(s) + CO2(g) ?Hrxn = 117.3 kJ What is ?H in kJ when 28.87 g of CO2 reacts with excess MgO?
At body temperature 37 C, Ka for aspirin equals 3 x10^ - 5.If two aspirin tablets, each having a mass of 325 mg, are dissolved in a full stomach whose volume is 1 L and whose pH is 2, what percent of the aspirin is in the form of neutral molecules
Cosidering the solubility of the nylon across the dirent solvents, what conclusion could be made about nylon solubility based on the structure of nylon and the structure of the solvents
(a) What was the molar concentration of acetic acid in the vinegar (b) Assuming the density of the vinegar to be 1.1 g/mL, what was the percent (by mass) of acetic acid in the vinegar
Calculate pFe2 at each of the following points in the titration of 25.00 mL of 0.02138 M Fe2 by 0.03645 M EDTA at a 7.00 pH: a) 11.00 ml pFe2+ =? b) the equivalence point Ve pFe2+=? c) 20.00 ml pFe2+=
the trunk remains undistrubed for 13,750 years what percentae of the original c-14 is still present ? ( half life of c-14 = 5730)
translate the following word equations into unbalanced chemical equations and explain how the equations represent what
consider a solution formed by mixing 51.0 ml of 0.100 m h2so4 27.0 ml of 0.100 m hocl 25.0 ml of 0.200 m naoh 25.0 ml
Lanthanum has two naturally occuring isotopes. 0.089% of lanthanum atoms are 138La and the rest are 139La. Estimate the average atomic mass of lanthanum, to the nearest tenth of an atomic mass unit.
A voltaic cell made of a Cr electrode in a solution of 1.0 M in Cr^3+ and a gold electrode in a solution that is 1.0 M in Au^3+. a) Provide the hald cell reactions for each of the electrodes.
A 0.160-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium? Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
what is the relative concentrations of hlnyellow and ln-blue for bromophnol blue ka1.0x10-4 at ph of
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