A. The wavelength of the yellow light emitted by the 3p-3s transition in sodium is 590 nm. What is the energy of the emitted photon?
2.1000 eV
You are correct. Your receipt no. is 161-7103 |
Previous Tries |
B. The probability of finding an atom at an excited state (relative to the probability of finding the atom in the ground state) is given by P=e−(ΔEkBT) At room temperature (T ∼ 300 K), what is the relative probability (compared to being in the ground state) that a sodium atom has its electron excited up to the 3p state?
P3p/P3s =
C. At the temperature of the flame (T ∼ 1500 K), what is the probability that a sodium atom has its electron excited up to the 3p state?
P3p/P3s = 6.9*10^-13
Incorrect. | Tries 1/99 | Previous Tries |
D. If we have 1 gram of sodium in our spoon, about how many atoms in the burner flame have their electron excited up to the 3p state at any one time? (Possibly useful fact: the atomic weight of sodium is 23 Da = 23 AMU.)
1.5*10^10
Incorrect. | Tries 1/99 |
(b)relative probablity= 1/(eE/KbT+1)
p= 1/(e2.1(1.6x10^-19)/1.38x10^-23 *300+1)
p=5.66x10-36 .
(C) relative probablity= 1/(eE/KbT+1)
p= 1/(e2.1(1.6x10^-19)/1.38x10^-23 *1500+1)
p=8.92x10-8 .
(d) Number of atoms in the excited state= (Na/23) * P
at 1500 k, N= (6.022x1023 /23)*8.92x10-8
N=2.34x1015
A. The wavelength of the yellow light emitted by the 3p-3s transition in sodium is 590...
I.(20p) Fill the following spaces with or circle the appropriate answers (can be more than one!). I.1. In Tom's frame of reference, two events A and B take place at different locations along the x axis but are observed by Tom to be simultaneous. Which of the following statements is true? (1) No observers moving relative to Tom will find A and B to be simultaneous, but some may see A before B and others B before A. (2) No...
What is the coefficient of H.So, when the following equation is properly balanced with the smallest set of whole numbers? __Cas(PO4h + H2SO4 - Caso + HPO. A) 3 B) 8 C) 10 D) 11 2) What is the coefficient of H20 when the following equation is properly balanced with smallest set of whole numbers? ALC + H2O - AM(OH), + CHE A) 3 B) 4 C) 6 D) 12 E) 24 3) of the reactions below, which one is...
CHEM-C 105 Principles of Chemistry I Summer Semester Practice Midterm Exam. 7? questions Note that questions are graded by answer only and work doesn't count HOW do You Aind 1. In which of the following are the masses given in the correct order? A. eg < mg <g< kg the Correct order 2 B. eg < g < kg < mg C. kg <g<eg < mg D. mg< eg<g< kg 2. For each of the diagrams above, determine how accurate...