The calibration curve below shows the plots of absorbance for standard solutions against the concentration of lead ions in part per million (ppm) Absorbance 0.7 0.6 0.5 0.4 0.3 0.2 སྦྱི 8 3 5 38; 0.1 0 1 2 3 5 Lead (Pb) Concentration (ppm) Lead Calibration Curve The concentration of lead in unknown soil sample can be determined at the MOST accurate if it is between. O A. 1.0 and 5.0 ppm O B. 0.0 and 5.0 ppm O C. 1.0 and 4.0 ppm O D. 0.0 and 4.0 ppm
The calibration curve below shows the plots of absorbance for standard solutions against the concentration of lead ions in part per million (ppm) Absorbance 0.7 0.6 0.5 0.4 0.3 0.2 སྦྱི 8 3 5 38; 0.1 0 1 2 3 5 Lead (Pb) Concentration (ppm) Lead Calibration Curve The concentration of lead in unknown soil sample can be determined at the MOST accurate if it is between. O A. 1.0 and 5.0 ppm O B. 0.0 and 5.0 ppm O C. 1.0 and 4.0 ppm O D. 0.0 and 4.0 ppm
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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3,6
Transcribed Image Text:The calibration curve below shows the plots of absorbance for standard solutions against the concentration of lead ions in part per million (ppm)
0.7
0.6
0.5
0.4
03
0.2
0.1
4
5
Lead (Pb) Concentration (ppm)
Lead Calibration Curve
The concentration of lead in unknown soil sample can be determined at the MOST accurate if it is between
O A. 1.0 and 5.0 ppm
O B. 0.0 and 5.0 ppm
O C. 1.0 and 4.0 ppm
O D. 0.0 and 4.0 ppm
Absorbance
Transcribed Image Text:Based on the figure below, choose the TRUE statement about the peristaltic pump used in Inductively Coupled Plasma Optical Emission Spectroscopy
(ICP-OES).
from
sample
vessel
to
nebulizer
O A. The flow rate of solution flowing through the tubing of the pump is fixed
O B. The pump that carries the sample solution will come into contact with the sample vessel
O C. The flow rate of the sample solution that flows into the nebulizer is variable
O D. The pump will come into contact with the sample solution to adjust the viscosity and surface tension
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