Ql) which of the following elements is easily determined by flame atomnie emission (A) Pb (B) Fe (C) Li (D) H

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter7: Statistical Data Treatment And Evaluation
Section: Chapter Questions
Problem 7.23QAP
icon
Related questions
Question
Ql) which of the following elements is casily determined by flame atomnie emission
(A) Pb
(B) Fe
(C) Li
(D) H
Q2) How many grams of K2SO. need to prepare 750 ml of 500ppm K. (At. mass K
39g/mol. M.MK2SO. =174g/mol)
(A) 0.837g
(B) 0.279g
(C)1.49g
(D) 0.558g
Q3) The molarities of ammonia solution. (M.M-17g/mol) that contains 14% ammonia
by weight. and density of solution is 0.90 g/ml
(A) 14.82 M
(B) 7.41 M
(C) 4.71M
(D) 10.93 M
Q4) In the experiment (Determination of Pb 2 by atomic absorption).The source of
radiation used is
A) hallo cathode lamp
(B) xenon lamp
(C) Da-lamp
(D)tungsten lamp
Q5) The main goal of using chromatography to separate mixtures as
(A) Efficient separation and strong signal
(B) Strong signal and sharp peaks
CjEfficient separation and minimum time
(D) Strong signal and minimum time
Q6) To improve separation on GC
(ANGradient elution
(BHigh flow rate
(cITemperature programming
IDIChange the detector
071 Mixture of Co-EDTA and NI-EDTA complexes has an absorbance of 0.260,when
measured in 1.0 cm cell at 380nm. The concentration of Nickel in this mixture,if it is
known that the concentration of Cobalt is 0,0143M (e are 0.0321 and 12.875 for
Co-EDTA und Ni-EDTA respectively)
Ajo.020M
(B) 0.0120M
(C) 3.1 1M
(D) 0.711M
Transcribed Image Text:Ql) which of the following elements is casily determined by flame atomnie emission (A) Pb (B) Fe (C) Li (D) H Q2) How many grams of K2SO. need to prepare 750 ml of 500ppm K. (At. mass K 39g/mol. M.MK2SO. =174g/mol) (A) 0.837g (B) 0.279g (C)1.49g (D) 0.558g Q3) The molarities of ammonia solution. (M.M-17g/mol) that contains 14% ammonia by weight. and density of solution is 0.90 g/ml (A) 14.82 M (B) 7.41 M (C) 4.71M (D) 10.93 M Q4) In the experiment (Determination of Pb 2 by atomic absorption).The source of radiation used is A) hallo cathode lamp (B) xenon lamp (C) Da-lamp (D)tungsten lamp Q5) The main goal of using chromatography to separate mixtures as (A) Efficient separation and strong signal (B) Strong signal and sharp peaks CjEfficient separation and minimum time (D) Strong signal and minimum time Q6) To improve separation on GC (ANGradient elution (BHigh flow rate (cITemperature programming IDIChange the detector 071 Mixture of Co-EDTA and NI-EDTA complexes has an absorbance of 0.260,when measured in 1.0 cm cell at 380nm. The concentration of Nickel in this mixture,if it is known that the concentration of Cobalt is 0,0143M (e are 0.0321 and 12.875 for Co-EDTA und Ni-EDTA respectively) Ajo.020M (B) 0.0120M (C) 3.1 1M (D) 0.711M
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Electronic Transitions and Spectroscopy
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Fundamentals Of Analytical Chemistry
Fundamentals Of Analytical Chemistry
Chemistry
ISBN:
9781285640686
Author:
Skoog
Publisher:
Cengage
Introductory Chemistry For Today
Introductory Chemistry For Today
Chemistry
ISBN:
9781285644561
Author:
Seager
Publisher:
Cengage
Physical Chemistry
Physical Chemistry
Chemistry
ISBN:
9781133958437
Author:
Ball, David W. (david Warren), BAER, Tomas
Publisher:
Wadsworth Cengage Learning,
Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:
9781938168390
Author:
Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:
OpenStax
Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781337399074
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning