Explanation:
In chemistry, the mole fraction or molar fraction is defined as unit of the amount of a constituent, nᵢ divided by the total amount of all constituents in a mixture, nₜₒₜ:This expression is given below:-
{\displaystyle x_{i}={\frac {n_{i}}{n_{\mathrm {tot} }}}}{\displaystyle x_{i}={\frac {n_{i}}{n_{\mathrm {tot} }}}}
The sum of all the mole fractions is equal to 1:
{\displaystyle \sum _{i=1}^{N}n_{i}=n_{\mathrm {tot} };\;\sum _{i=1}^{N}x_{i}=1}{\displaystyle \sum _{i=1}^{N}n_{i}=n_{\mathrm {tot} };\;\sum _{i=1}^{N}x_{i}=1}
The same concept expressed with a denominator of 100 is the mole percent, molar percentage or molar proportion (mol%).
The mole fraction is also called the amount fraction.[1] It is identical to the number fraction, which is defined as the number of molecules of a constituent Ni divided by the total number of all molecules Ntot. This expression is given below:-
{\displaystyle x_{i}={\frac {n_{i}}{n_{\mathrm {tot} }}}}{\displaystyle x_{i}={\frac {n_{i}}{n_{\mathrm {tot} }}}}
The sum of all the mole fractions is equal to 1:
{\displaystyle \sum _{i=1}^{N}n_{i}=n_{\mathrm {tot} };\;\sum _{i=1}^{N}x_{i}=1}{\displaystyle \sum _{i=1}^{N}n_{i}=n_{\mathrm {tot} };\;\sum _{i=1}^{N}x_{i}=1}
It is a radio wave
Explanation:
The energy of an electromagnetic waves is related to its frequency by the equation:
where
h is the Planck constant
f is the frequency of the wave
We notice that the energy of an electromagnetic wave is proportional to its frequency. This means that waves with higher frequencies, such as gamma rays, x-rays, are more energetic, while waves with lower frequencies, such as microwave and radio waves, are the less energetic.
In this case, we want to find the frequency of a wave with energy
E = 0.000001 eV
Converting into Joules,
Solving for the frequency,
Which falls in the range of frequency of radio waves.
Learn more about electromagnetic waves:
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Answer:
V₂ = 13.4 L
Explanation:
Given data:
Initial volume of gas = 22.5 L
Initial pressure = 1.25 atm
Final pressure = 2.10 atm
Final volume = ?
Solution:
The given problem will be solved through the Boly's law,
"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"
<em>Mathematical expression:
</em>
P₁V₁ = P₂V₂
P₁ = Initial pressure
V₁ = initial volume
P₂ = final pressure
V₂ = final volume
Now we will put the values in formula,
P₁V₁ = P₂V₂
1.25 atm × 22.5 L = 2.10 atm × V₂
V₂ = 28.125 atm. L/ 2.10 atm
V₂ = 13.4 L
Oxygen cannot be broken down into a simpler substance by using chemicals :) Hope this helps and the other answer gets removed :)
The answer is d. The answer is that because both of them can reproduce that way.