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What volume of 0.100M NaOH is required to precipitate all the nickel(ii) ions from 150.0 mL of a 0.228M solution of Ni(NO3)2?
concentration of base
A 50.00 ml sample of aqueous Ca(OH)2 required 34.66 mL of a 0.961M nitric acid for neutralization. calculate the concentration (molarity) of the original solution of calcium hydroxide.
What are the equilibrium concentrations of Bi3+ ion and Cu(NH3)4 2+ complex ion. (Assume again that the concentrations of NH3 and OH- are buffered and will not change from their original values)
The melting point of a pure compound is known to be 110-111°. Describe the melting behavior expected if this compound is contaminated with 5% of an impurity.
The diffusion coeffiicent of a particular kind of t-RNA molecule is D=1.0x10^-11 m^2 s^-1 om the medium of a cell interior. How long does it take molecules produced in the cell nucleus to reach the wall of the cell at a distance 1.0um, correspondi..
how much water would be needed to completely dissolve 1.78 of the gas at a pressure of 730 and a temperature of 27? a
how much heat is produced in burning 7 mol of rmc2 rmh2 under standard conditions if both reactants and products are
how many of the following combination of reactants would result in a chemical reaction being observed. Aditition of liquid bromine to an aqueous solution of NaCl Aditition of liquid bromine to an aqueous solution of NaI Bubbling chlorine gas
Calculate the pH when 16.00 mL of 0.100 M sodium hydroxide is added to 10.00 mL of a 0.100 M phosphoric acid solution.
A diver at a depth of 100 ft (pressure approximately 3 atm) exhales a small bubble of air with a volume equal to 100 mL. What will be the volume of the bubble (assume the same amount of air) at the surface?
A pstient is administered mercury-197 to help evaluate kidney fuction. Mercury-197 has a half - life of 65 hours. what fraction of an initial of an initial does of mercury
the mass of a cube of iron is 324 g. iron has a density of 7.87 gcm3. what is the mass of a cube of lead that has the
the labels of bottles that contain barium hydroxide, hydrochloric acid and sodium carbonate had fallen off. When the contents of the bottle A were mixed with B's Contents, a white precipitate formed, A with C yielded a gas and B with C gave heat.
The pressure inside a hydrogen-filled container was 2.10 at 21 . What would the pressure be if the container was heated to 90
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