The temperature at the surface of sun has to be estimated. Concept Introduction: Wien's displacement law: It states that black body radiation curve at various temperature get higher at particular wavelength. The mathematical equation for Wien’s law is given as λ max = b T T is absolute temperature in kelvins. b is a Wien's displacement constant.
The temperature at the surface of sun has to be estimated. Concept Introduction: Wien's displacement law: It states that black body radiation curve at various temperature get higher at particular wavelength. The mathematical equation for Wien’s law is given as λ max = b T T is absolute temperature in kelvins. b is a Wien's displacement constant.
Solution Summary: The author explains the mathematical equation for Wien's law, which states that black body radiation curve at various temperature get higher at particular wavelength.
The temperature at the surface of sun has to be estimated.
Concept Introduction:
Wien's displacement law:
It states that black body radiation curve at various temperature get higher at particular wavelength. The mathematical equation for Wien’s law is given as
λmax=bT
T is absolute temperature in kelvins.
b is a Wien's displacement constant.
(b)
Interpretation Introduction
Interpretation:
The astronomers able to determine temperature of star has to be explained.
Concept Introduction:
Wien's displacement law:
It states that black body radiation curve at various temperature get higher at particular wavelength. The mathematical equation for Wien’s law is given as
8. Draw all the resonance forms for each of the fling molecules or ions, and indicate the major
contributor in each case, or if they are equivalent (45)
(2)
-PH2
سمة
مد
A
J
то
گای ه
+0
Also calculate the amount of starting materials chlorobenzaldehyde and p-chloroacetophenone
required to prepare 400 mg of the given chalcone product 1, 3-bis(4-chlorophenyl)prop-2-en-1-one
molar mass ok 1,3-bis(4-Chlorophenyl) prop-2-en-1-one = 277.1591m01
number of moles= 0.400/277.15 = 0.00144 moles
2 x 0.00 144=0.00288 moves
arams of acetophenone = 0.00144 X 120.16 = 0.1739
0.1739x2=0.3469
grams of benzaldehyde = 0.00144X106.12=0.1539
0.1539x2 = 0.3069
Starting materials:
0.3469 Ox acetophenone,
0.3069 of benzaldehyde
3
1.
Answer the questions about the following reaction:
(a) Draw in the arrows that can be used make this reaction occur and draw in the product of substitution in this
reaction. Be sure to include any relevant stereochemistry in the product structure.
+
SK
F
Br
+
(b) In which solvent would this reaction proceed the fastest (Circle one)
Methanol
Acetone
(c) Imagine that you are working for a chemical company and it was your job to perform a similar reaction to the
one above, with the exception of the S atom in this reaction being replaced by an O atom. During the reaction, you
observe the formation of three separate molecules instead of the single molecule obtained above. What is the likeliest
other products that are formed? Draw them in the box provided.
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