Answer: Option (D) is the correct answer.
Explanation:
In fusion reaction, two small nuclei combine together to result in the formation of a large nuclei.
Whereas in fission reaction, large nuclei dissociates into two or more small nuclei.
Nuclear fusion releases more energy as compared to nuclear fission.
For example, two hydrogen nuceli fuse together and result in the formation of helium atom along with release of energy.
The most common method to get an idea about the pH of solution is to use an acid base indicator. An indicator is a large organic molecule that works somewhat like a " color dye". Whereas most dyes do not change color with the amount of acid or base present, there are many molecules, known as acid - base indicators<span> , which do respond to a change in the hydrogen ion concentration. Most of the indicators are themselves weak acids.</span>
(125 mg Na) x (1 g/1000mg) x (1 mol of Na/22.99 g) = 5.43 E -3 mols of Na
5.43 E -3 mols x 6.022 E 23 = 3.27 E 21 Na atoms
They are very stable (not reactive).
This is because their outer shell has a total of 8 valence electrons. All elements strive to get towards a full outer shell, but since these elements already have a full outer shell, they are fairly unreactive.
Answer: (a) Mole fraction of 
is 0.66.
Mole fraction of 
is 0.33
(b) The partial pressure of is 1.98 atm.
The partial pressure of is 0.99 atm.
(c) The total pressure is 3.0 atm
Explanation:
Given: Volume = 
(1 
= 1 L) = 22.4 L
Moles of = 2.0 mol
Moles of = 1.0 mol
Total moles = (2.0 + 1.0) mol = 3.0 mol
Temperature = 273.15 K
- Now, using ideal gas equation the total pressure is calculated as follows.
where,
P = pressure
V = volume
n = number of moles
R = gas constant = 0.0821 L atm/mol K
T = temperature
Substitute the values into above formula as follows.
- The mole fractions of each component:
The mole fraction of is calculated as follows.
The mole fraction of is as follows.
- The partial pressures of each component:
Partial pressure of are as follows.
Partial pressure of are as follows.
