(a)
Interpretation:
The given data needs to be plotted using the spreadsheet including the least-squares line assuming a linear relationship between instrument reading and concentration.
Concept introduction:
The quality of water can be measured by turbidity. The degree in which the transparency of water is lost is known as turbidity. Ther higher the suspended solids, the higher is the turbidity of the water. It is measured by turbidimeter and the unit is Nephelometric Turbidity Units.
(b)
Interpretation:
The slope and intercept of the straight line from the graph needs to be determined.
Concept introduction: The quality of water can be measured by turbidity. The degree in which the transparency of water is lost is known as turbidity. Ther higher the suspended solids, the higher is the turbidity of the water. It is measured by turbidimeter and the unit is Nephelometric Turbidity Units.
(c)
Interpretation:
For the slope and intercept of the graph, standard deviation needs to be determined.
Concept introduction:
The quality of water can be measured by turbidity. The degree in which the transparency of water is lost is known as turbidity. Ther higher the suspended solids, the higher is the turbidity of the water. It is measured by turbidimeter and the unit is Nephelometric Turbidity Units.
(d)
Interpretation:
The concentration of the sulfate in the sample at turbidimeter reading 3.67 needs to be determined. The absolute standard deviation and coefficient of variation needs to be calculated.
Concept introduction:
The quality of water can be measured by turbidity. The degree in which the transparency of water is lost is known as turbidity. Ther higher the suspended solids, the higher is the turbidity of the water. It is measured by turbidimeter and the unit is Nephelometric Turbidity Units.
(e)
Interpretation:
Assuming 3.67 as mean of six turbidimeter readings, the calculations in part (d) needs to be repeated.
Concept introduction:
The quality of water can be measured by turbidity. The degree in which the transparency of water is lost is known as turbidity. Ther higher the suspended solids, the higher is the turbidity of the water. It is measured by turbidimeter and the unit is Nephelometric Turbidity Units.
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Chapter A1 Solutions
Principles of Instrumental Analysis
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- What is the missing reactant in this organic reaction? CH3 O [0] R CH3-CH-C-OH Specifically, in the drawing area below draw the condensed structure of R. If there is more than one reasonable answer, you can draw any one of them. If there is no reasonable answer, check the No answer box under the drawing area. Note: the organic equation above only shows the important organic reactant and product. Minor small-molecule reactants or products (like H₂O) are not shown. No Answer Click anywhere to draw the first atom of your structure. ×arrow_forwardPredict the product of this organic reaction: O CH3 A NH3 + HO–C—CH—CH, P+H₂O Specifically, in the drawing area below draw the condensed structure of P. If there is no reasonable possibility for P, check the No answer box under the drawing area. No Answer Click anywhere to draw the first atom of your structure. A 5arrow_forwardFor a reaction to be spontaneous, the Gibbs Free Energy must be less than zero. True or Falsearrow_forward
- Which of the following reactions will be exothermic? a) Reaction has enthalpy less than zero. b) Reaction has enthalpy greater than zero. c) Reaction has entropy less than zero. d) Reaction has entropy equal to zero.arrow_forwardHow many valence electrons are used in predicting the Lewis Dot structure of CH4? a) 8 b) 6 c) 10 d) 2arrow_forwardHow many valence electrons are used in predicting the Lewis Dot structure of CO2? a) 32 b) 26 c) 24 d) 16arrow_forward
- How many valence electrons are used in predicting the Lewis Dot structure of NO2? a) 17 b) 12 c) 5 d) 10arrow_forwardA compound that is bonded with an ionic bond is unlikely to dissolve in water. True or Falsearrow_forwardIn VSEPR Theory, AX6 is a) linear b) tetrahedral c) octahedral d) trigonal bipyramidarrow_forward
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