In chemistry, the molar mass M is a physical property defined as the mass of a given substance (chemical element or chemical compound) divided by its amount of substance. The base SI unit for molar mass is kg/mol. However, for historical reasons, molar masses are almost always expressed in g/mol.
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Answer:
When the electrons in the atom are excited, for example by being heated, the additional energy pushes the electrons to higher energy orbitals. When the electrons fall back down and leave the excited state, energy is re-emitted in the form of a photon
Explanation:
Answer:

Explanation:
Hi, the first step is to calculate how much F2 there is in the container:
<u>Fluorine can be considered as an ideal gas</u> (given that is non-polar and has a small molecule). Using the ideal gas formula:

Where:






Now, the mols of iodine:


<u>The chemical reaction described is the following</u>:

In this case, the limitant reactant is the fluorine:
1) The 0.056 mol of F2 gives
of
and consumes
of I2.
2) At the end, in the conteiner we have:
of 
of 
of 
In total:
.All in 2.5 L at 550 K
<u>The final pressure</u>:



The partial pressure:


<em>Note: this partial pressure is calculated by the Dlaton's principle</em>
Answer:
The order of the reaction is 1.
Explanation:

The rate law of the reaction ;
![R=k[N_2O_5]^x](https://tex.z-dn.net/?f=R%3Dk%5BN_2O_5%5D%5Ex)
The rate of the reaction from T = 0 s to 25 s,
to
respectively.

..[1]
The rate of the reaction from T = 25 s to 50 s,
to
respectively.

..[2]
[1] ÷ [2]
![\frac{0.00712 M/s}{0.0058 M/s}=\frac{k[0.822 M]^x}{k[0.677 M]^x}](https://tex.z-dn.net/?f=%5Cfrac%7B0.00712%20M%2Fs%7D%7B0.0058%20M%2Fs%7D%3D%5Cfrac%7Bk%5B0.822%20M%5D%5Ex%7D%7Bk%5B0.677%20M%5D%5Ex%7D)
Solving for x:
x = 1.05 ≈ 1
The rate law of the reaction ;
![R=k[N_2O_5]^1](https://tex.z-dn.net/?f=R%3Dk%5BN_2O_5%5D%5E1)
The order of the reaction is 1.