What is the threshold frequency for sodium metal if a photon with frequency 6.66 × 10 14 s − 1 ejects an electron with 7.74 × 10 − 20 J kinetic energy? Will the photoelectric effect be observed if sodium is exposed to orange light?
What is the threshold frequency for sodium metal if a photon with frequency 6.66 × 10 14 s − 1 ejects an electron with 7.74 × 10 − 20 J kinetic energy? Will the photoelectric effect be observed if sodium is exposed to orange light?
What is the threshold frequency for sodium metal if a photon with frequency
6.66
×
10
14
s
−
1
ejects an electron with
7.74
×
10
−
20
J kinetic energy? Will the photoelectric effect be observed if sodium is exposed to orange light?
Definition Definition Phenomenon in which a substance absorbs electromagnetic radiation and electrically charged particles are emitted from or inside it.
Draw e arrows between the following resonance structures:
a)
b)
: 0:
:0:
c) :0:
N
t
: 0:
بار
N
Draw the major substitution products you would expect for the reaction shown below. If substitution would not occur at a significant
rate under these conditions, check the box underneath the drawing area instead.
Be sure you use wedge and dash bonds where necessary, for example to distinguish between major products.
Note for advanced students: you can assume that the reaction mixture is heated mildly, somewhat above room temperature, but
strong heat or reflux is not used.
Cl
Substitution will not occur at a significant rate.
Explanation
Check
:☐
O-CH
+
Х
Click and drag to start
drawing a structure.
Draw the major substitution products you would expect for the reaction shown below. If substitution would not occur at a significant
rate under these conditions, check the box underneath the drawing area instead.
Be sure you use wedge and dash bonds where necessary, for example to distinguish between major products.
Note for advanced students: you can assume that the reaction mixture is heated mildly, somewhat above room temperature, but
strong heat or reflux is not used.
Cl
C
O Substitution will not occur at a significant rate.
Explanation
Check
+
O-CH3
Х
Click and drag to start
drawing a structure.
Genetic Analysis: An Integrated Approach (3rd Edition)
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