1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vanyuwa [196]
3 years ago
8

Calculate the percentage difference in the fundamental vibrational wavenumbers of 23Na35Cl and 23Na37Cl on the assumption that t

heir force constants are the same. The mass of 23Na is 22.9898mu.
Chemistry
1 answer:
stealth61 [152]3 years ago
4 0

Answer:

1.089%

Explanation:

From;

ν =1/2πc(k/meff)^1/2

Where;

ν = wave number

meff = reduced mass or effective mass

k = force constant

c= speed of light

Let

ν =1/2πc (k/meff)^1/2  vibrational wave number for 23Na35 Cl

ν' =1/2πc(k'/m'eff)^1/2 vibrational wave number for 23Na37 Cl

The between the two is obtained from;

ν' - ν /ν  = (k'/m'eff)^1/2 - (k/meff)^1/2 / (k/meff)^1/2

Therefore;

ν' - ν /ν = [meff/m'eff]^1/2 - 1

Substituting values, we have;

ν' - ν /ν = [(22.9898 * 34.9688/22.9898 + 34.9688) * (22.9898 + 36.9651/22.9898 * 36.9651)]^1/2  -1

ν' - ν /ν = -0.01089

percentage difference in the fundamental vibrational wavenumbers of 23Na35Cl and 23Na37Cl;

ν' - ν /ν * 100

|(-0.01089)|  × 100 = 1.089%

You might be interested in
How many moles of atoms are contained in the following 2.25g of k
ZanzabumX [31]
Atomic mass (K)= 39.1 amu

therefore:
1 mol (k)---------------------39.1 g
x------------------------------- 2.25 g

x=(1 mol * 2.25 g) / 39.1 g=0.05754....≈0.06 moles

Answer: 0.06 moles.
8 0
3 years ago
Jill graphs the speed of a model train that is travelling at a speed of 15 kilometers per hour. Which graph shows the speed of t
Tasya [4]

Answer:c

Explanation:

8 0
3 years ago
Select the conjugate acid-base pair(s). a) HI, I b) HCHO2, SO4^2- c) CO3^2-, HCI d) PO4^3-, HPO4^2-
Semenov [28]

Answer:

d) PO4^3-, HPO4^2-

Explanation:

Basically, an acid and a base which differs only by the presence or absence of  proton (hydrogen ion) are called a conjugate acid-base pair.

a) HI, I

This is incorrect. For the acid, HI the conjugate base is I⁻ ion.

b) HCHO2, SO4^2-

This is incorrect, there's no relationship between both entities.

c) CO3^2-, HCI

This is incorrect, there's no relationship between both entities.

d) PO4^3-, HPO4^2-

This is correct. The difference between both entities is the Hydrogen ion. This is the conjugate acid-base pair

6 0
3 years ago
How do I do this? It's in Chemistry, and it has to do with Single Replacement
Setler [38]
Is there any more to the picture?
4 0
3 years ago
How many moles are equal to 2.188E+23 atoms of iron?
rusak2 [61]
<span>2.188*10^23 atoms of iron
6.022*10^23 atoms/mole
(2.188*10^23 atoms of iron)/(6.022*10^23 atoms/mol)~.3633 moles of iron

Hope this helps!</span>
7 0
3 years ago
Other questions:
  • The law of reflection states that the angle of incidence equals the angle of reflection. Define the angle of incidence in terms
    13·1 answer
  • How many grams of H3PO4 are in 175mL of a 2.50M solution of H3PO4?
    7·2 answers
  • The burning of propane gas can be represented as a balanced chemical reaction as follows: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g) Calcula
    7·1 answer
  • What volume of 10,0 M H2SO4 is required to prepare 4.0 L of 0.50 M H2SO4?
    10·1 answer
  • Among the intermolecular forces, which forces are typically the weakest?
    8·2 answers
  • Historically the troubadour was a ____.
    10·1 answer
  • Why is water important to cells
    5·2 answers
  • What is the similarities of freezing of water and electrolysis of water​
    10·1 answer
  • Why is a rise in sea level significant?
    5·2 answers
  • Classify HBr as a strong acid or a weak acid.<br><br><br> Strong Acid or Weak Acid?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!