Answer:
[BrCl] = 0,13M
Explanation:
For the reaction:
Br₂(g) + Cl₂(g) ⇄ 2BrCl
kc = [BrCl]²/[Br₂] [Cl₂] (1)
If initial [Br₂] and [Cl₂] are 0,25mol/3,0L=0,083M and 0,55mol/3,0L=0,18M, the concentrations in equilibrium are:
[Br₂] = 0,083M - x
[Cl₂] = 0,18M - x
[BrCl] = 2x
Replacing in (1)
7 = (2x)²/ (0,083 - x)(0,18 - x)
7 = 4x²/ x²- 0,263x + 0,01494
7x² - 1,841x + 0,10458 = 4x²
3x² - 1,841x + 0,10458 = 0
Solving for x:
x = 0,0633. As [BrCl] = 2x. [BrCl] = 0,13M
I hope it helps!
(2) Cl– (4) H–
a. True
b. False?
CO which is carbon monoxide is a primary pollutant for air pollution. As it contributes to the major proportion in the air pollutants amongst others. It has 48% percent of pollutants in comparison to other pollutants of air. The source of carbon monoxide is mainly from incomplete combustion of fuel mostly from the older cars.
The rise in atmospheric CO results in fatigue, drowsiness and my also sometimes lead to death of the person exposed to it.
The statement is true. Carbon monoxide (CO) is a primary pollutant, which is directly emitted into the environment from vehicles and machines burning fossil fuels and can negatively impact our health by limiting the oxygen transportation in the body.
Yes, the statement 'CO is a primary pollutant' is True. Primary pollutants are those that are directly emitted into the environment and have a damaging effect. Carbon monoxide (CO) is a significant primary pollutant that is largely produced by vehicles and other machines that burn fossil fuels. It is harmful because, when inhaled, CO can limit your body's ability to transport oxygen in your bloodstream, leading potentially to serious health problems.
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The percent by mass of chlorine in NaCl is 60.68 % of chlorine
calculation
mass % of chlorine =mass of chlorine /mass of NaCl x 100
from periodic table the mass of cl= 35.5 g/mol
that of of Na = 23 g/mol
The mass of NaCl is therefore = 35.5 g/mol + 23 g/mol =58.5 g/mol
mass % is therefore= (35.5 / 58.5 x 100) =60.68 %
In the given question, 60.66% is the percent by mass of chlorine in NaCl.
Mass is a physical property of matter that measures the amount of substance in an object. It is typically measured in grams (g) or kilograms (kg).
The molar mass of NaCl is 58.44 g/mol. The molar mass of chlorine is 35.45 g/mol. The formula of NaCl indicates that there is one chlorine atom for every sodium atom. Therefore, the mass of chlorine in NaCl is 35.45 g/mol.
To calculate the percent by mass of chlorine in NaCl, we need to divide the mass of chlorine by the total mass of NaCl and multiply by 100. This can be expressed as follows:
Percent by mass of chlorine = (mass of chlorine/mass of NaCl) × 100
Substituting the values, we get:
Percent by mass of chlorine = (35.45 g/mol/58.44 g/mol) × 100
= 60.66%
Therefore, the percent by mass of chlorine in NaCl is 60.66%.
Learn more about mass here:
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