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ASHA 777 [7]
3 years ago
13

what are the similarities and differences between the gas properties and kinetic molecular theory postulates?

Chemistry
1 answer:
Sever21 [200]3 years ago
3 0
The Kinetic Molecular Theory Postulates state that gases are made up of a larger number of particles, which, behave like hard, spherical objects that move in constant and random motion. Moreover, the particles move straight until they collide with other particles or walls in the containers, the particles are also smaller than the distance between them making the volume of gasses mostly empty space. There are also no attractive forces between the particles or between the particles or between the particles and the walls of the container. Lastly, the average kinetic energy of gas particles depends on the temperature of the gas alone.

In the other hand, the properties of gasses are that a gas has no define volume or shape, gasses also have low densities and all behave the same even in changes with temperature and pressure by expanding or contracting depending on the change.
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We can also use the equation for enthalpy change for physical phase changes. Consider the phase change H2O(l) → H2O(g). Calculat
VLD [36.1K]

Answer: The value of enthalpy of the given reaction is 44.000 kJ/mol , that is energy is supplied to water to change into water vapors

Explanation:

H_2O(l)\rightarrow H_2O(g),\Delta H_{rxn}=?

Enthalpy of formation of water in liquid state,\Delta H_{f,H_2O(l)}=-285.820 kJ/mol

Enthalpy of formation of water in gaseous state,\Delta H_{f,H_2O(g)}=-241.820 kJ/mol

\Delta H_{rxn}=\sum \Delta H_f \text{of products}-\sum \Delta H_f \text{of reactants}

\Delta H_{rxn}=(-241.820 kJ/mol)-(-285.820 kJ/mol)=44.000 kJ/mol

The value of enthalpy of the given reaction is 44.000 kJ/mol, that is energy is supplied to water to change into water vapors.

6 0
3 years ago
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What is the theoretical yield of ammonia that can be obtained from the reaction of 10.0 g of H2 and excess N2?
zubka84 [21]
Theoretical yield is the ideal number, so we'll assume it all reacted without issue.
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What is the relationship between electron configuration and valence electrons?
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Answer:

The electrons that occupy the outermost shell of an atom are called valence electrons. Valence electrons are important because they determine how an atom will react. By writing an electron configuration, you'll be able to see how many electrons occupy the highest energy level .

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2 years ago
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Sindrei [870]
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24 / 6 = 4

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3 years ago
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