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il63 [147K]
3 years ago
6

Be sure to answer all parts. Arrange the following substances in order of increasing strength of intermolecular forces. Click in

the answer box to open the symbol palette.
a. H2
b. Ne
c. O2
d. NH3
Chemistry
1 answer:
horsena [70]3 years ago
8 0

Answer:

H2<Ne<O2<NH3

Explanation:

Intermolecular forces refer to the force of attraction between molecules of a substance in any given state of matter whether solid, liquid or gas. Molecules in a substance must be held together by intermolecular forces of attraction. The magnitude of these intermolecular forces of attraction depends on many factors.

For H2, He and O2, the intermolecular force present in these gases are London forces. As the relative molecular mass of individual gas molecules becomes greater, London forces increases significantly with molecular mass. This explains the sequence shown in the answer.

NH3 has the strongest intermolecular interaction because it contains hydrogen bonds since nitrogen is an electronegative element. This a greater intermolecular interaction than dispersion forces.

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Igoryamba

Answer:

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Explanation:

  Equation of reaction:

             CO   + 2H₂    ⇒   CH₃OH   +   energy

a.  An increase in pressure:

A change in pressure affects only equilibrium involving a gas or gases. Le Chatelier's principle can be used to predict the direction of displacement.

An increase in pressure on an equilibrium system will shift the position of equilibrium to the side having smaller volume and vice-versa

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b. Addition of H₂:

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Addition of hydrogen gas increases the concentration of amount of substances reacting.

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Which of the following should workers do to prevent being pinned between equipment or other objects
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8. What is the heat of reaction when hydrogen and oxygen combine to form water?
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Answer:

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<u>C. 571.6 kJ</u>

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Enthalpy Change = The enthalpy change for the formation of 1 mole of the substance from their standard state is called the enthalpy of formation.

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Its value is -285.8 kJ for 1 mole

And here two moles are present . so the value of molar enthalpy is:

-285.8 x 2 = -571.6 kJ

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