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
yaroslaw [1]
2 years ago
14

A given volume of methane diffuses in 20 seconds. How long will it take the same volume of hydrogen to diffuse under the same co

nditions? [CH4 = 16; H2 = 2]​
Chemistry
2 answers:
Airida [17]2 years ago
6 0

The time taken for the same volume of methane gas to diffuse is 7.1 s.

<h3>Rate of gas diffusion</h3>

The rate at which a given mass of diffuses is inversely proportional to the molar mass of the gas.

\frac{t_2}{t_1} = \sqrt{\frac{M_2}{M_1} }

where;

  • M1 is the molar mass of methane (CH4) = 16 g
  • M2 is the molar mass of hydrogen as = 2
  • t1 is time taken for methane = 20 s
  • t2 is the time taken for hydrogen = ?

\frac{t_2}{t_1} = \sqrt{\frac{M_2}{M_1} }\\\\\frac{t_2}{20} = \sqrt{\frac{2}{16} }\\\\\frac{t_2}{20} = \frac{\sqrt{2} }{4} \\\\t_2 = \frac{20\sqrt{2} }{4} \\\\t_2 = 5\sqrt{2} \\\\t_2 = 7.1 \ s

Thus, the time taken for the same volume of methane gas to diffuse is 7.1 s.

Learn more about rate of gas diffusion here: brainly.com/question/26696466

nikdorinn [45]2 years ago
3 0

The time it takes for hydrogen to diffuse is 7.07 seconds

<h3 /><h3>Graham's law of diffusion</h3>

To calculate the time it will take hydrogen gas to diffuse, we use the formula from Graham's law of diffusion.

Formula:

  • T'/T = √(M'/M)........... Equation 1

Where:

  • T' = Time taken for menthane to diffuse
  • T = Time take for hydrogen to diffuse
  • M' = Relative molecular mass of menthane
  • M = Relative molecular mass of hydrogen.

Make T the subject of the equation

  • T = T'/[√(M'/M)]................ Equation 2

From the question,

Given:

  • T' = 20 seconds
  • M' = 16
  • M = 2

Substitute these values into equation 2

  • T = 20/[√(16/2)]
  • T = 20/[√(8)]
  • T = 20/(2.828)
  • T = 7.07 seconds

Hence, The time it takes for hydrogen to diffuse is 7.07 seconds.

Learn more about Graham's law of diffusion here: brainly.com/question/22359712

You might be interested in
What is the effect of an increase in the average kinetic energy of an object
timofeeve [1]
The effect of an increase in the average kinetic energy of an object would be an increase in the temperature of the object.  Temperature is directly proportional to the average kinetic energy of the molecules in the object. Hope this answers the question.
7 0
3 years ago
Determine which equations you would use to solve the following problem: Calculate the amount of heat needed to change 20.0 g of
Inessa [10]

Answer:

Q = 4019.4 J

Explanation:

Given data:

Mass of ice = 20.0 g

Initial temperature = -10°C

Final temperature = 89.0°C

Amount of heat required = ?

Solution:

specific heat capacity of ice is 2.03 J/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1

ΔT =  89.0°C - (-10°C)

ΔT = 99°C

Q = 20.0 g ×2.03 J/g.°C × 99°C

Q = 4019.4 J

3 0
3 years ago
Which equation agrees with the ideal gas law? mc005-1.jpg mc005-2.jpg mc005-3.jpg mc005-4.jpg
AlexFokin [52]
The ideal gas equation is pV = nRT


From that you can derive several equations, depending on which variables are fixed.


1) When n and T are fixed:

pV = nRT = constant


pV = constant => p1 V1 = p2 V2 => p1 / V2 = p2 / V1 ---> Boyle's Law


2) When n and V are constant:


p / T = nR/V = constant


p / T = constant => p1 / T1 = p2 / T2  ----> Gay - Lussac's Law


3) when n and p are constant


V / T = nR/p = constant   


V / T = constant => V1 / T1 = V2 / T2 ---> Charles' Law


4) When only n is constant


pV / T = nR = constant


pV / T = constant => p1 V1 / T1 = p2 V2 / T2 ----> Combined gas law.



There  you have the four equations that agree with the ideal gas law.  
7 0
3 years ago
Read 2 more answers
Can you solve the anagrams
slamgirl [31]
Compound
Property
Molecule
Magnet
????
7 0
3 years ago
What is the indicator of the number of ions in solution?
Andru [333]

Answer:

The amount of solute added.

Explanation:

The amount of solute added is directly proportional to the number of ions.

The higher the amount added the higher the number of moles.

The number of moles is multiplied by the Avogadro's constant to get the number ions.

No of ions= No of moles × L

L is the Avogadro's number.

3 0
3 years ago
Read 2 more answers
Other questions:
  • When K2SO4 is separated into its ions, how is it written?
    15·2 answers
  • The chemical symbol for sodium is <br> a. na. <br> b. n. <br> c. s. <br> d. sn.
    8·1 answer
  • 151200 as scientific notation
    9·1 answer
  • What is the oxidation state of each element in the species Mn(ClO4)3
    5·2 answers
  • Are polyatomic ions molecular compounds or ionic compounds?
    5·1 answer
  • How many molecules of carbon monoxide are in 10 mL at STP
    10·1 answer
  • What volume of 1.25 M sodium hydroxide (NaOH) solution can be prepared using 60.0 g of sodium hydroxide? (The mass of one mole o
    10·1 answer
  • Is the path of electrons orbital or reactive?
    10·1 answer
  • What is the name of GaF3?
    12·1 answer
  • Question 21 of 25 Which of the following requires a chemical change?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!