A 10.00 mL sample of an unknown aqueous nickel(II) solution (density = 1.00 to produce 0.0532...
5) People with severe contact dermatitis may have some concern over the nickel content Stainless steel utensils. Suppose you knew that the % Ni in a steel sample was approximately 10.00%. If you wanted to ensure that you produced 5.00 gramot precipitate, how many grams of steel would you suggest as a sample? Gwen Ni reacts with a precipitating agent called DMG in a 1:2 stoichiometry to form NI(DMG)2. The Molar mass of Ni = 58.69 g/mol; the molar mass...
A 21.5 g sample of nickel was treated with excess silver nitrate solution to produce silver metal and nickel(II) nitrate. The reaction was stopped before all the nickel reacted, and 36.5 g of solid metal (nickel and silver) is present. Calculate the mass of solid silver metal present.
4) Analysis of a sample of nitroglycerine yielded 0.6053 g of carbon, 0.0841 g of hydro 0.7061 8 of nitrogen and 2.4210 g of oxygen. The empirical formula of nitroglyce Solution: 5) People with severe contact dermatitis may have some concern over the nickercom stainless steel utensils. Suppose you knew that the % Ni in a steel sample was approximately 10.00%. If you wanted to ensure that you produced 5.00 gram precipitate, how many grams of steel would you suggest...
A 188.6 mL sample of an aqueous solution at 25°C contains 80.2 mg of an unknown nonelectrolyte compound. If the solution has an osmotic pressure of 8.44 torr, what is the molar mass (in g/mol) of the unknown compound?
The addition of dimethylglycoxime, H2C4H6O2N2, to a solution containing nickel(II) ion gives rise to a precipitate: Ni2+ + 2H2C4H6O2N2 Ni(H2C4H6O2N2)2 + 2H+ If 0.15 g nickel alloy is treated with dimethylglycoxime and .175 mg nickel dimethylglycoxime is collected. Determine the mass and percent of nickel in the alloy.
4. A 100.0 mL solution of nickel (II) bromate, Ni(BrO3)2, IS 0.1010 mol/L. a. How many MOLES of Ni(BrO3)2 are there? · Ni(BrO3)2, is made with a molarity of (2 marks) (1.5 marks) b. What is the MOLAR MASS of Ni(BrO3)2?! (1.5 marks) c. What MASS of Ni(BrO3)2 is in the solution?
1a. An aqueous solution has a Molarity of 1.632 M. The density of the solution is (1.150x10^0) g/mL and the solute has a molar mass of (1.33x10^2) g/mol. What is the molality of this solution? 1b. An aqueous solution has a mass percent of solute of 18.4%. The density of the solution is (1.400x10^0) g/mL and the solute has a molar mass of (1.77x10^2) g/mol. What is the molality of this solution? 1c. An aqueous solution has a molality of...
A chloride unknown sample weighing 0.4213 g is dissolved in acidic solution and is treated with the precipitating solution. The silver chloride precipitate that forms is filtered, washed, dried and weighed. The mass of the silver chloride obtained is 0.5915 g. Calculate the % Cl in this unknown sample. Molar Masses: AgCl = 143.35 g/mol, Cl– = 35.45 g/mol
What is the molality of a 0.735 M aqueous ZnCl2 solution with a density of 1.102 g solution/mL solution. Assume the density of pure water is 1.00 g/mL. The molar mass of ZnCl2 is 136.29 g/mol.
QUESTION 1 A 20.0 mL sample solution contains unknown amount of bromide ion (Br). To this solution was added the solution that contains plenty of AgNO3. AgBr precipitates were formed. The precipitate were filtered and measured to be is 0.6964 g. What is the molarity of bromide ion in the original sample solution? The molar mass of Br = 80.0 g; the molar mass of AgBr = 188 g. (Solution) AgNO, is soluble and thus exists Ag+ ion and NO3-ion....