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Nickle (II) ion is a group III cation. The compound Ni(OH)2(s) is very insoluble in water; the Ksp of Ni(OH)2 is 2.0x10^-16> nevertheless, Ni(OH)2(s) does not precipitate from a basic solution that contains ammonia
Stripping voltammetry is a trace electrochemical technique in which the current is linearly proportional to concentration. A solution of 1.0x10-7 M Pb(II) gave a current of 0.139 mA.
Determine the number of protons and neutrons in a carbon-14 isotope and write its symbol in the form A/Z X
The international unit for weighing diamonds and determine the volume of a 0.76 carat diamond if The density of diamond is given=3.51 g/cm3 ?express your answer in units of cm3
A mixture of 0.10 mol of NO(g), 0.05 mol of H2(g), and 0.10 mol of H2O(g) is placed in a 1.0-L vessel at 300K?
what are the possible sources of error when finding the density of a liquid and of a solid? what can be done to avoid these errors?
What is the limiting reactant when 4.5 moles of aluminum react with 6.7 moles of oxygen gas?
What volume of concentrated HCl is necessary to completely neutralize the 10 mL of 1.5 M NaOH used?
If, in practice, 5.0 mL of 16.0 M nitric acid were added to effect the dissolution of the copper, what would be the minimum volume of 4.00 M NaOH required to neutralize the remaining acid and convert all of the Cu2+(aq) to Cu(OH)2(s)
of 3M sodium acetate and water would you use to make 10ml of a 0.25M solution of sodium acetate? Show the calculations.
The mixture was stirred, causing all of the sample to dissolve. The excess HCl in the solution required 38.4 mL of 0.164 M NaOH for complete neutralization in a titration. What was the molecular formula of the white substance
For a certain reaction ?Gorxn = 27.9 kJ/mol. What is the equilibrium constant at 225oC? Remember to convert kJ to J to have consistent units and the temperature to K.
sodium metal reacts violently with water to produce aqueous sodium hydroxide and hydrogen gas. calculate the enthalpy change for this reaction.
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