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A water sample was found to contain [Ca2+]=35 mg/L and [Mg2+]=20 mg/L. Determine the water hardness in terms of mg/L CaCO3.and state whether it has low, medium or high hardness.
Order the following compounds according to their expected lattice energies- LiBr, CaO, MgBr2, AlBr3
manganeseii oxide leadiv oxide and nitric acid react to produce permanganic acid leadii nitrate and water according to
A solution of Na3AsO4 is added dropwise to a solution that is 0.0643 M in Bi3+ and 0.000180 M in Cd2+. What concentration of AsO43- is necessary to begin precipitation
What effect on the boiling point of a liquid is produced by: a) The presence of a soluble non-volatile impurity?
a mixture of gas with a total pressure 760mmhg having each of the given gasesco2 ar o2at the indicated partial
Using the intermolecular bonding between H2O moleculesin it's two condensed phases (solid ice versus liquid water), explain the observed phenomenon that
a 5.00 g chunk of potassium is dropped into 1.00 kg water at 24 deg c. what is the final temperature of the water after
Dry coke is combusted with dry air to generate the solid refuse, the flue gas and the superheated steam. Calculate the heat transfer to of from the process. Use a constant Cp for the inert of 8.5 J/g and assume everything at 1atm.
Properties of Electrolyte Solutions, In the winter of 1994, record low temperatures were registered throughout the United States. For example, in Champaign, Illinois, a record low of -29 F was registered.
what mass of water must be used to dissolve 20.0 grams of ethanol, C2H5OH, to prepar a 0.0500 molal solution of ethanol
consider the equation aaq 2baq 3caq 2daq. in one experiment 45.0 ml of 0.050 m a is mixed with 25.0 ml 0.100 m b. at
Based on the two balanced reaction equations, find the ?G for the complete oxidation of one ethanol to two CO2 molecules.
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