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tiny-mole [99]
3 years ago
5

What is the molecular description of diffusion? the transfer of energy between the moving molecules the constant, organized mole

cular movement from lower concentration to higher concentration the random molecular movement from higher concentration to lower concentration the concentration of heavier molecules on one side and lighter molecules on the other NextReset
Chemistry
2 answers:
otez555 [7]3 years ago
8 0

The correct answer is

The random molecular movement from higher concentration to lower concentration

:)

Paul [167]3 years ago
5 0
The random molecular movement from higher concentration to lower concentration
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According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

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(2) C(s)+O_2(g)\rightarrow CO_2(g)     \Delta H_2=-393.5kJ/mol

Now we are reversing reaction 1 and then adding both the equations, we get :

(1) CO(g)\rightarrow C(s)+\frac{1}{2}O_2(g)     \Delta H_1=110.5kJ/mol

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The expression for enthalpy change for the reaction will be,

\Delta H_{rxn}=\Delta H_1+\Delta H_2

\Delta H_{rxn}=(110.5)+(-393.5)

\Delta H_{rxn}=-283kJ/mol

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