Answer:
The concentration of chloride ion is ![2.82\times10^{-3}\;mol/L](https://tex.z-dn.net/?f=2.82%5Ctimes10%5E%7B-3%7D%5C%3Bmol%2FL)
Explanation:
We know that 1 ppm is equal to 1 mg/L.
So, the
content 100 ppm suggests the presence of 100 mg of
in 1 L of solution.
The molar mass of
is equal to the molar mass of Cl atom as the mass of the excess electron in
is negligible as compared to the mass of Cl atom.
So, the molar mass of
is 35.453 g/mol.
Number of moles = (Mass)/(Molar mass)
Hence, the number of moles (N) of
present in 100 mg (0.100 g) of
is calculated as shown below:
![N=\frac{0.100\;g}{35.453\;g/mol}=2.82\times 10^{-3}\;mol](https://tex.z-dn.net/?f=N%3D%5Cfrac%7B0.100%5C%3Bg%7D%7B35.453%5C%3Bg%2Fmol%7D%3D2.82%5Ctimes%2010%5E%7B-3%7D%5C%3Bmol)
So, there is
of
present in 1 L of solution.
Answer:
O.2006 M
Explanation:
M1V1 =M2V2
M1 = M2V2/V1 =0.150M*32.1 ml/24.0 ml = 0.2006 M
Answer:
Explanation:
The gas ideal law is
PV= nRT (equation 1)
Where:
P = pressure
R = gas constant
T = temperature
n= moles of substance
V = volume
Working with equation 1 we can get
![n =\frac{PV}{RT}](https://tex.z-dn.net/?f=n%20%3D%5Cfrac%7BPV%7D%7BRT%7D)
The number of moles is mass (m) / molecular weight (mw). Replacing this value in the equation we get.
or
(equation 2)
The cylindrical container has a constant pressure p
The volume is the volume of a cylinder this is
![V =(pi)*r^{2}*h](https://tex.z-dn.net/?f=V%20%3D%28pi%29%2Ar%5E%7B2%7D%2Ah)
Where:
r = radius
h = height
(pi) = number pi (3.1415)
This cylinder has a radius, r and height, h so the volume is ![V =(pi)*r^{2}*h](https://tex.z-dn.net/?f=V%20%3D%28pi%29%2Ar%5E%7B2%7D%2Ah)
Since the temperatures has linear distribution, we can say that the temperature in the cylinder is the average between the temperature in the top and in the bottom of the cylinder. This is:
Replacing these values in the equation 2 we get:
(equation 2)
Answer:It will go on until the concentrations will meet. Blood cells are composed mainly of water, it will make up the proportion of about 90% of water for whole body. ... Because of the difference in osmotic potential caused by the salt water solution, water will diffuse out of the red blood cells causing them to shrink in size.
Explanation:
Answer:
is an electric force on the potassium ion due to the chloride ion.
Explanation:
Charge on potassium ion = ![q_1=1.602\times 10^{-19} C](https://tex.z-dn.net/?f=q_1%3D1.602%5Ctimes%2010%5E%7B-19%7D%20C)
Charge on chlorine ion = ![=q_2=-1.602\times 10^{-19} C](https://tex.z-dn.net/?f=%3Dq_2%3D-1.602%5Ctimes%2010%5E%7B-19%7D%20C)
Separation between these two charges = r = ![7.700 nm=7.700\times 10^{-9} m](https://tex.z-dn.net/?f=7.700%20nm%3D7.700%5Ctimes%2010%5E%7B-9%7D%20m)
![1 nm=10^{-9} m](https://tex.z-dn.net/?f=1%20nm%3D10%5E%7B-9%7D%20m)
Electric force on the potassium ion due to the chloride ion = F
Coulomb's law is given as ;
![F=K\times \frac{q_1\times q_2}{r^2}](https://tex.z-dn.net/?f=F%3DK%5Ctimes%20%5Cfrac%7Bq_1%5Ctimes%20q_2%7D%7Br%5E2%7D)
= Charges on both charges
r = distance between the charges
K = Coulomb constant =![9\times 10^{9} N m^2/C^2](https://tex.z-dn.net/?f=9%5Ctimes%2010%5E%7B9%7D%20N%20m%5E2%2FC%5E2)
![F=9\times 10^{9} N m^2/C^2\times \frac{1.602\times 10^{-19} C\times (-1.602\times 10^{-19} C)}{(7.700\times 10^{-9} m)^2}](https://tex.z-dn.net/?f=F%3D9%5Ctimes%2010%5E%7B9%7D%20N%20m%5E2%2FC%5E2%5Ctimes%20%5Cfrac%7B1.602%5Ctimes%2010%5E%7B-19%7D%20C%5Ctimes%20%28-1.602%5Ctimes%2010%5E%7B-19%7D%20C%29%7D%7B%287.700%5Ctimes%2010%5E%7B-9%7D%20m%29%5E2%7D)
![F=-3.896\times 10^{-12} N](https://tex.z-dn.net/?f=F%3D-3.896%5Ctimes%2010%5E%7B-12%7D%20N)
(negative sign indicates that attractive force is exerting between two ions)
is an electric force on the potassium ion due to the chloride ion.