The first part of Dalton's model is that all matter is made of atoms, and these atoms are indivisible.
The second part of this model is that atoms of an element have identical masses and identical propertes.
At last, the third part of Dalton's model is that all compounds are formed by two or more different type of atoms combined.
Answer:
Ethanol (boiling point 78°C) and methanol (boiling point 65°C) are two miscible liquids. There is only a small difference in their boiling points. These two liquids are separated from their mixture by fractional ths distillation.
When vapours of the mixture pass through the fractionating column, repeated liquefaction and vapourisation take place. Subsequently, the vapours of low boiling methanol enter the condenser from the fractionating column, condense to liquid and get collected in the round bottomed flask first. Similarly, ethanol with higher boiling point can be collected later in another round bottomed flask.
<u>Answer:</u> The Gibbs free energy of the reaction is -114629.4 J
<u>Explanation:</u>
To calculate the Gibbs free energy of the reaction, we use the equation:
where,
= Gibbs free energy of the reaction = ?
R = Gas constant = 
T = temperature of the reaction = 298 K
= equilibrium constant of the reaction = 
Putting values in above equation, we get:
Hence, the Gibbs free energy of the reaction is -114629.4 J
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Answer:
Option C = They must have same average kinetic energy.
Explanation:
According to the kinetic molecular theory,
1. The kinetic energy of gas molecules is only depend upon the temperature.
2. The gas molecules are randomly moves in any direction and thus colloid with each other and wall of container. This collision is elastic.
3. The volume of gas particles is negligible as compared to the volume of container.
4. The ideal gas does not exhibit attractive and repulsive forces.
The first postulate of kinetic molecular theory state that the average kinetic energy is depend upon the temperature so at the same temperature and pressure the two different gases have same kinetic energy.
