Answer : The correct option is, (a) 345 K
Explanation :
The conversion used for the temperature from degree Celsius to Kelvin is:
where,
= temperature in Kelvin
= temperature in centigrade
As we are given the temperature in degree Celsius is, 72
Now we have to determine the temperature in Kelvin.
Therefore, the temperature in Kelvin is, 345 K
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Answer:
Mass of oxygen that will be required to produce 6 mole of water is 96g .
Explanation:
Mass of oxygen = ?
Atomic mass of oxygen is =16g
Molecular mass of O₂= 32 g
Now, according to question statement we need to calculate oxygen needed to produce 6 mol of water .
In 1 mol of water ,there is O₂/2 is present or we can say that 1 oxygen atom is present .
We also know that ,
1 mol of water has = 1 mole of oxygen
Therefore ,
6 moles of water will have 6 moles of oxygen atom
Mass of 6 moles of oxygen atom can be calculated as :
Mole =given mass/atomic mass
6=X /16
X = 16 x 6
=96g
Answer:
activity coefficient 
activity coefficient 
The change in pH in part A = 0.092
The change in pH in part B = 0.102
Explanation:
From the given information:
pH of HCl solution = 1.092
Activity of the pH solution [a] = 
[a] = 0.0809 M
Recall that [a] = 
× C
where;
= activity coefficient
C = concentration
Making the activity coefficient the subject of the formula, we have:
![\gamma = \dfrac{[a]}{C}](https://tex.z-dn.net/?f=%5Cgamma%20%3D%20%5Cdfrac%7B%5Ba%5D%7D%7BC%7D)
B.
The pH of a solution of HCl and KCl = 2.102
[a] = 
[a] = 0.00791 M
activity coefficient 
C. The change in pH in part A = 1.091 - 1.0 = 0.092
The change in pH in part B = 2.102 -2.00 = 0.102
Answer: Option A
Explanation:
The size exclusion chromatography is a type of chromatography which is based on the size of the molecules.
The solution is separated based on the molecular weight and size. It is usually used the separation of the macro molecules.
The sample carrying the mixture of substances is put into the column and then based and the weight or size the smaller molecules comes first and the larger and heavier molecules comes later.
So, the order will be Option A
