Chemistry, 07.04.2020 23:49 ellaemtagedeane
21-B. Mn was used as an internal standard for measuring Fe by atomic absorption. A standard mixture containing 2.00 mg Mn/mL and 2.50 mg Fe/mL gave a quotient (Fe signal/Mn signal) 5 1.05/1.00. A mixture with a volume of 6.00 mL was prepared by mixing 5.00 mL of unknown Fe solution with 1.00 mL containing 13.5 mg Mn/mL. The absorbance of this mixture at the Mn wave- length was 0.128, and the absorbance at the Fe wavelength was 0.185. Find the molarity of the unknown Fe solution.
Answers: 1
Chemistry, 22.06.2019 09:00
Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?
Answers: 1
Chemistry, 22.06.2019 19:10
Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .
Answers: 2
Chemistry, 23.06.2019 03:30
Select the correct lewis structure for fluorine which is group 7a element?
Answers: 1
Chemistry, 23.06.2019 06:00
What volume of 0.500 mol/l hydrochloric acid, hci (aq) is required to react completely with 1.00 g of aluminum hydroxide, ai(oh)3 (s)?
Answers: 1
21-B. Mn was used as an internal standard for measuring Fe by atomic absorption. A standard mixture...
Computers and Technology, 04.04.2020 04:38
Physics, 04.04.2020 04:38
Mathematics, 04.04.2020 04:39
Mathematics, 04.04.2020 04:39
Biology, 04.04.2020 04:39