Chemistry In Focus
6th Edition
ISBN: 9781305544727
Author: Tro
Publisher: Cengage
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Chapter 6, Problem 69E
Explain why the formula
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There is an instrument in Johnson 334 that measures total-reflectance x-ray fluorescence (TXRF) to do elemental analysis (i.e., determine what elements are present in a sample). A researcher is preparing a to measure calcium content in a series of well water samples by TXRF with an internal standard of vanadium (atomic symbol: V). She has prepared a series of standard solutions to ensure a linear instrument response over the expected Ca concentration range of 40-80 ppm. The concentrations of Ca and V (ppm) and the instrument response (peak area, arbitrary units) are shown below. Also included is a sample spectrum. Equation 1 describes the response factor, K, relating the analyte signal (SA) and the standard signal (SIS) to their respective concentrations (CA and CIS).
Ca, ppm
V, ppm
SCa, arb. units
SV, arb. units
20.0
10.0
14375.11
14261.02
40.0
10.0
36182.15
17997.10
60.0
10.0
39275.74
12988.01
80.0
10.0
57530.75
14268.54
100.0…
A mixture of 0.568 M H₂O, 0.438 M Cl₂O, and 0.710 M HClO are enclosed in a vessel at 25 °C.
H₂O(g) + C₁₂O(g) = 2 HOCl(g)
K = 0.0900 at 25°C
с
Calculate the equilibrium concentrations of each gas at 25 °C.
[H₂O]=
[C₁₂O]=
[HOCI]=
M
Σ
M
What units (if any) does the response factor (K) have? Does the response factor (K) depend upon how the concentration is expressed (e.g. molarity, ppm, ppb, etc.)?
Chapter 6 Solutions
Chemistry In Focus
Ch. 6 - Drawing Structural and Condensed Structural...Ch. 6 - Prob. 6.2YTCh. 6 - Drawing Structural Formulas for Isomers Draw...Ch. 6 - Prob. 6.4YTCh. 6 - What are the names of the straight-chain alkanes...Ch. 6 - Which structure corresponds to CH2=CHCH3?Ch. 6 - For the following molecule, why is the name...Ch. 6 - What property is characteristic of chlorinated...Ch. 6 - Prob. 5SCCh. 6 - Prob. 6SC
Ch. 6 - Prob. 7SCCh. 6 - Prob. 1ECh. 6 - Prob. 2ECh. 6 - Prob. 3ECh. 6 - Prob. 4ECh. 6 - What is vitalism? Why did vitalism become a...Ch. 6 - Prob. 6ECh. 6 - Prob. 7ECh. 6 - Prob. 8ECh. 6 - Prob. 9ECh. 6 - List four common fuels used by our society, and...Ch. 6 - Prob. 11ECh. 6 - Why are alkenes and alkynes called unsaturated...Ch. 6 - Prob. 13ECh. 6 - Prob. 14ECh. 6 - Prob. 15ECh. 6 - Prob. 16ECh. 6 - Prob. 17ECh. 6 - Prob. 18ECh. 6 - Prob. 19ECh. 6 - Prob. 20ECh. 6 - Prob. 21ECh. 6 - Prob. 22ECh. 6 - Prob. 23ECh. 6 - Prob. 24ECh. 6 - Prob. 25ECh. 6 - Prob. 26ECh. 6 - Prob. 27ECh. 6 - Prob. 28ECh. 6 - Prob. 29ECh. 6 - Prob. 30ECh. 6 - Prob. 31ECh. 6 - Prob. 32ECh. 6 - Prob. 33ECh. 6 - Prob. 34ECh. 6 - Prob. 35ECh. 6 - Prob. 36ECh. 6 - Prob. 37ECh. 6 - Prob. 38ECh. 6 - Prob. 39ECh. 6 - Prob. 40ECh. 6 - Prob. 41ECh. 6 - Prob. 42ECh. 6 - Naming Hydrocarbons Name each alkane:Ch. 6 - Name each alkane:Ch. 6 - Name each alkyne:Ch. 6 - Name each alkyne: a.CH3CHCHCH2CH2CH3Ch. 6 - Name each alkyne:Ch. 6 - Prob. 48ECh. 6 - Prob. 49ECh. 6 - Prob. 50ECh. 6 - Drawing Hydrocarbon Structures from Names Draw the...Ch. 6 - Draw the condensed structural formula for each...Ch. 6 - Prob. 53ECh. 6 - Prob. 54ECh. 6 - Prob. 55ECh. 6 - Prob. 56ECh. 6 - Functionalized Hydrocarbons Identify each compound...Ch. 6 - Identify each compound according to its functional...Ch. 6 - Identify each compound according to its functional...Ch. 6 - Identify each compound according to its functional...Ch. 6 - Propane, CH3CH2CH3, is a gas at room temperature,...Ch. 6 - Prob. 62ECh. 6 - What was the impact of vitalisms downfall on...Ch. 6 - Why do you think our society has mixed feelings...Ch. 6 - Prob. 65ECh. 6 - Prob. 66ECh. 6 - Prob. 67ECh. 6 - Any one molecule can be represented many ways. For...Ch. 6 - Explain why the formula CH3CH2CH3 cannot mean:...Ch. 6 - Prob. 70ECh. 6 - Prob. 71ECh. 6 - Prob. 72ECh. 6 - Prob. 73E
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- Provide the structure, circle or draw, of the monomeric unit found in the biological polymeric materials given below. HO OH amylose OH OH 행 3 HO cellulose OH OH OH Ho HOarrow_forwardWhat units (if any) does K have? Does K depend upon how the concentration is expressed (e.g. molarity, ppm, ppb, etc.)? in calculating the response factorarrow_forwardDon't used hand raiting and don't used Ai solutionarrow_forward
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