(a) Interpretation: The concentration of atrazine in ppb units needs to be determined. Concept introduction: Parts per billion (ppb) describes the number of unit mass of concentration per thousand million. It is used to measure concentration of contaminant in soils and sediments. Molarity is the solution’s concentration is termed as the moles number of solute per liter of solution.
(a) Interpretation: The concentration of atrazine in ppb units needs to be determined. Concept introduction: Parts per billion (ppb) describes the number of unit mass of concentration per thousand million. It is used to measure concentration of contaminant in soils and sediments. Molarity is the solution’s concentration is termed as the moles number of solute per liter of solution.
Solution Summary: The author explains that the concentration of atrazine in ppb units needs to be determined. Parts per billion describes the number of unit mass of concentration per thousand million.
The concentration of atrazine in ppb units needs to be determined.
Concept introduction:
Parts per billion (ppb) describes the number of unit mass of concentration per thousand million. It is used to measure concentration of contaminant in soils and sediments.
Molarity is the solution’s concentration is termed as the moles number of solute per liter of solution.
Interpretation Introduction
(b)
Interpretation:
The concentration of atrazine in molarity units needs to be explained.
Concept introduction:
Parts per billion (ppb) describes the number of unit mass of concentration per thousand million. It is used to measure concentration of contaminant in soils and sediments.
Molarity is the solution’s concentration is termed as the moles number of solute per liter of solution.
The Concept of Aromaticity
21.15 State the number of 2p orbital electrons in each molecule or ion.
(a)
(b)
(e)
(f)
(c)
(d)
(h)
(i)
DA
(k)
21.16 Which of the molecules and ions given in Problem 21.15 are aromatic according to the
Hückel criteria? Which, if planar, would be antiaromatic?
21.17 Which of the following structures are considered aromatic according to the Hückel
criteria?
---0-0
(a)
(b)
(c)
(d)
(e)
(h)
H
-H
.8.0-
21.18 Which of the molecules and ions from Problem 21.17 have electrons donated by a
heteroatom?
1. Show the steps necessary to make 2-methyl-4-nonene using a
Wittig reaction. Start with triphenylphosphine and an alkyl
halide. After that you may use any other organic or inorganic
reagents.
2. Write in the product of this reaction:
CH3
CH₂
(C6H5)₂CuLi
H₂O+
3. Name this compound properly, including stereochemistry.
H₂C
H3C
CH3
OH
4. Show the step(s) necessary to transform the compound on the
left into the acid on the right.
Bri
CH2
5. Write in the product of this
LiAlH4
Br
H₂C
OH
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