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The maximum allowable concentration of Pb2+ ions in drinking water is 0.05ppm that is, 0.05 g of Pb2+ in 1million g of water. Is this guideline exceeded if an underground water supply is at equilibrium with the mineral anglesite, PbSO4 (Ksp=1.6 x10-8)?
Our reaction mixture had an oily layer layer on top when we added 3M sulfuric acid. what would cause this
the beers law slope for the fe-phenanthroline complex is found to be 0.2100 lmg fe. the absorbance of the diluted
Why is water a reactant in the fermentationof sucrose? Enter the solubility-product expression
the osmotic pressure of this soluion was 0.00155 atm at 25 degrees celcius. calculate the molar mass of hemoglobin, which is a molecular compound and a nonelectrolyte.
Calculate the molar solubility of thallium chloride in 0.20M NaCl at 25 degrees Celcius. Ksp for TICl is 1.7 x 10 -4. What volume of 0.500 M HNO3 is needed to titrate 60.00 mL of 0.500 M Ca(OH)2 to the equivalence point?
What is the relationship between the standard cell potentials, E, for the following two galvanic cell reactions?
oxygen gas reacts with powdered aluminum according to the following reaction 4als 3o2 g 2al2o3s. how many liters of
What percentage of Phospine is decomposed after 1.25 min? c) How long will it take to decompose one fifth of the phosphine?
a student weighs 0.12311 g of na2co3 and dissolves it in 50.0 ml of water in an erlenmeyer flask. how many moles of hcl
How many moles of gas (air) were in the container originally. c)How many moles of gas are in the container after the explosion. d)What is the pressure (in atmospheres) inside the container after the explosion according to the ideal gas law.
What volume, in liters, of hydrogen gas measured at STP can be produced from 50mL of 6.0 M hydrpbromic acid and ac excess of zinc metal, according to the following reaction: 2HBr(aq)+Zn(s) -> ZnBr2 (aq)+H2(g)
Explain Copper (Cu) dissolves in nitric acid (HNO3), producing copper (II) nitrate, Cu (NO3)2, nitrogen dioxide (NO2) and H2O. Explain what mass of NO2 could possibly be produced by the reaction of 5.00g of Cu and 25.0 g of HNO3
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