Q15 q14

A 0.5220g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated as AgCl by the addition of an excess of silver nitrate. The mass of the resulting AgCl is found to be 1.21739. What is the mass percentage of chlorine in the original compound? A student determines the nickel content of a solution by first precipitating it as nickel hydroxide, and then decomposing the hydroxide to nickel oxide by heating. How many grams of nickel oxide should the student obtain if his solution contains 56.0mL of 0.406M nickel nitrate? the laboratory, a student dilutes 27.4mL of a 9.93M hydrobromic acid solution to a total volume of 100.0mL. Wh the concentration of the diluted solution? Eoncentration=M How many milliters of 11.5M hydrochloric acid solution should be used to prepare 5.00L of 0.400MHCl ? mL