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In the laboratory you dissolve 18.5 g of nickel(II) bromide in a volumetric flask and add water to a total volume of 125 . mL.
What is the molarity of the solution? M
What is the pH of the solution containing 0.20 M NH3 and 0.15 M NH4Cl?
Calculate the pH of a buffer made from 0.28 M HNO2 and 0.23 M NO2-. The Ka for HNO2 is 4.6×10-4
A mixture of 0.100 mol of NO, 0.050 mol of H2 and 0.10 mol of H2O is placed in a 1.0L vessel at 300 K. The following equilibrium is established: 2 NO(g) + 2 H2O(g). At equilibrium [NO] = 0.062 M. Calculate the equilibrium concentrations of a.) H2, b.) N2 and c.) H2O and d.) Kc.
At what temperature in Fahrenheit will a 830grams Carbon dioxide occupies a volume of 390L at 1900 torr?
At what temperature in Fahrenheit will a 830grams Carbon dioxide occupies a volume of 390L at 1900 torr?
The compound "A" has molecular formula C,/,, which on reacting with 1% mercuric
sulphate & sulphuric acid form compound "B". The compound "B" on reaction with
sodium hydroxide and iodine forms yellow colored precipitate "C". Identify compound
"B" & "C and write required chemical Equations.
What mass of solid Lanthanum (III) oxalate nonahydrate { La2 ( C2O4 )3 ∙ 9 H2O } can be obtained from 650 mL of 0.0170 M aqueous solution of LaCl3 by adding a stoichiometric amount of sodium oxalate ?
What mass of solid Lanthanum (III) oxalate nonahydrate { La2 ( C2O4 )3 ∙ 9 H2O } can be obtained from 650 mL of 0.0170 M aqueous solution of LaCl3 by adding a stoichiometric amount of sodium oxalate ?
A 1.5 g sample of helium gas has a volume of 25.0 L at -3.5 C. What is the pressure of the gas?
