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
RideAnS [48]
3 years ago
9

A certain organ pipe, open at both ends, produces a fundamental frequency of 272 HzHz in air. Part A If the pipe is filled with

helium at the same temperature, what fundamental frequency fHefHef_He will it produce? Take the molar mass of air to be 28.8 g/molg/mol and the molar mass of helium to be 4.00 g/molg/mol .
Chemistry
1 answer:
vladimir2022 [97]3 years ago
7 0

Answer:

fundamental frequency in helium = 729.8 Hz

Explanation:

Fundamental frequency of an ope tube/pipe = v/2L

where v is velocity of sound in air = 340 m/s; λ is wave length of wave = 2L ; L  is length of  the pipe

To find the length of the pipe,

frequency  = velocity of sound / 2L

272 = 340 / 2 L

L = 0.625 m

If the pipe is filled with helium at the same temperature, the velocity of sound will change as well as the frequency of note produced since velocity is directly proportional to frequency of sound.

Also, the velocity of sound is inversely proportional to  square root of molar mass of gas; v ∝ 1/√m

v₁/v₂ = √m₂/m₁

v₁ = velocity of sound in air, v₂ = velocity of sound in helium, m₁ = molar mass of air, m₂ = molar mass of helium

340 / v = √4 / 28.8

v₂ = 340 / 0. 3727

v₂  =  912.26  m /s  

fundamental frequency in helium  = v₂ / 2L

fundamental frequency in helium = 912.26 / (2 x 0.625)

fundamental frequency in helium = 729.8 Hz

You might be interested in
Does anyone know Coulomb’s law??
Ierofanga [76]

Answer:

the force between charged particles increases when they are in solid form

3 0
3 years ago
In common speech, some people may use the terms hypothesis and theory interchangeably. In science, however, the terms have diffe
Leto [7]

Answer:

A hypothesis is something you can test a theory is just a thought that you have.

3 0
3 years ago
Read 2 more answers
What continent has no deserts
nevsk [136]

Answer:

Antarctica.

Explanation:

It’s all ice.

4 0
3 years ago
If the vapor pressure of ethanol at 34.7degree C is 100
saw5 [17]

Answer:

we will use the Clausius-Clapeyron equation to estimate the vapour pressures of the boiling ethanol at sea level pressure of 760mmHg:

 ln (P2/P1) = \frac{ΔvapH}{R}([tex]\frac{1}{T1}-\frac{1}{T2})

where

P1 and P2 are the vapour pressures at temperatures  T1 and T2

Δ vapH  = the enthalpy of vaporization of the ETHANOL

R  = the Universal Gas Constant

In this problem,

P 1 = 100 mmHg

;  T 1 = 34.7 °C = 307.07 K

P 2 = 760mmHg

T 2 =T⁻²=?

Δ vap H = 38.6 kJ/mol

R = 0.008314 kJ⋅K -1 mol -1

ln ( 760/10)=(0.00325 - T⁻²) (38.6kJ⋅mol-1 /0.008314 )

0.0004368=(0.00325 - T⁻²)  

T⁻²=0.002813

T² = 355.47K

6 0
3 years ago
Convert 150.0 g to mg.
tatyana61 [14]
There are 1000 milligrams in a gram, so you can find the answer through multiplication: 150 • 1000

The answer is 150,000
6 0
3 years ago
Other questions:
  • Given that one cup = 257.6 mL, calculate the molarity of vitamin C in orange juice.
    13·1 answer
  • 21) Amines, amides, and amino acids are categories of *
    15·1 answer
  • How many atoms are in 3.20 moles of carbon
    7·1 answer
  • The atomic number of an element is the same as its _________________.
    8·2 answers
  • one part of dalton's atomic theory states: compounds are formed by combinations of atoms from two or more elements. is this stat
    14·1 answer
  • Which of the following elements will likely form a negative ion in its ionic compounds?
    9·2 answers
  • What is the correct answer?
    15·1 answer
  • Which of the following statements is true?
    13·2 answers
  • What is the molarity of 5.63 moles of lithium in 3.25 liters of solution
    5·1 answer
  • What can you conclude about the relationship between height and energy?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!