Your lab partner dissolves 0.8392 g unknown bromide (Br-) sample into 210.08 mL of distilled water. 31.50 mL of the unknown brom
ide solution is placed in a 250 mL Erlenmeyer flask with 31 mL of distilled water, 13 mL of well mixed 1% dextrin solution and 4 drops of dichlorofluorescein.
You weighed out 1.7438 g of AgNO3 (purity 96.48 %) through the weighing by difference method. The AgNO3 crystals were placed in a calibrated 300 mL volumetric flask (with a value of 300.10 mL). The AgNO3 solution was used to condition the 50.00 mL burette, and after filling the burette and removing an air bubble, the initial volume was 0.23 mL.
The 1:1 analyte to titrant ratio was reached after 38.25 mL of titrant was added to the Erlenmeyer flask and the precipitate turned a light pink in the solution.
(a) What is the concentration of the AgNO3 solution to the correct number of significant figures?
(b) What is the volume of titrant in L?
(c) What is the volume of the "P" term in L?
(d) What is the mass of the unknown bromide sample in micrograms?
(e) What is the % Br- in this sample to the correct number of significant figures?
Choose the most appropriate answer for each of the five parts.
1 answer:
You might be interested in
Answer:
True
Explanation:
Volume is measured in "cubic" units. The volume of a figure is the number of cubes required to fill it completely, like blocks in a box. Volume of a cube = side times side times side. Since each side of a square is the same, it can simply be the length of one side cubed.
No icicles are water made up of atoms not cells
Answer:
2 elements.
Explanation:
N is your Nitrogen and H is your Hydrogen. Elements are just one specific kind of atom. You have two elements with names Nitrogen and Hydrogen. Therefore, you have two elements.
2C2H6 + 7O2 → 4CO2 + 6H2O
The radioactive decay of uranium -238 in the earth's crust produces radioactive radon gas Rn-222 which escapes into the atmosphere is one common cause of background radiation.
