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Vika [28.1K]
3 years ago
10

A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is

Chemistry
1 answer:
Brilliant_brown [7]3 years ago
5 0
But what is the width of the molecule
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Answer: D. An increase in entropy

Explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from  an disordered arrangement to an ordered arrangement, the entropy is said to increase and vice versa.

For a reaction to be spontaneous, the enthalpy of the solution must decrease and the entropy must increase.

To overcome a positive enthalpy of solution and allow a solid  solute to dissolve in water, an increase in entropy would make the reaction spontaneous as the system would move to a more disordered state.

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Explanation:

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How stable is the matter that the energy is transferring to? How volatile is the thermal Resistance?

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O2- is the Lewis ______ in the following reaction
matrenka [14]

O^{2-} is the Lewis base in the following reaction:

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<h3>What is lewis base? </h3>

Lewis base is a species that donates an electron pair.

In the above-given chemical equation, the O^{2-}is the lewis base which is donating an electron pair to the central atom of SO_3 to form SO_4^{-2}.

Hence, O^{2-} is the Lewis base in the following reaction:

SO_3(g) + O^{2-}(aq)   →  SO_4^{2-}(aq)

Learn more about the lewis base here:

brainly.com/question/15570523

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Which of the following observations is incorrect about the order of a reaction?
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a) Order of a reaction is always a whole number

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Order of a reaction is not always whole number. It can be zero, or fractional .

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