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ehidna [41]
3 years ago
7

Gloria’s family built a new deck using building materials made from recycled plastic bottles. As they were heated, the plastics

softened and were formed into new shapes. These plastics were ______________ solids, and their particles are arranged ________________ . These solids are different from __________________solids, which melt at a specific temperature. *
5 points
1. crystalline, vibrating, amorphous
2. amorphous, in no regular pattern, crystalline
3. amorphous, in a regular pattern, crystalline
2. crystalline, in no regular pattern, viscosity
Chemistry
1 answer:
steposvetlana [31]3 years ago
6 0

Answer:2

Explanation:

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Answer:

The system will change its concentration to shift to a new equilibrium position.

Explanation:

For example  in the Haber Process

N2  +  3H2  ⇄  2NH3

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The elements C and Se have the same electronegativity value, 2.55. Which of the following claims about the compound that forms f
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B

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Having the same electronegativity means that the both elements will form a nonpolar bond. The shared electrons of the bind will be found equidistant from the nucleus of the two atoms because none has an unusual ability to attract the electrons of a bond towards itself.

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3 years ago
The combustion of ethene in the presence of excess oxygen yields carbon dioxide and water: c2h4 (g) + 3o2 (g) → 2co2 (g) + 2h2o
meriva

Answer:

\boxed{-267.5}

Explanation:

You can calculate the entropy change of a reaction by using the standard molar entropies of reactants and products.

The formula is

\Delta_{r} S^{\circ} = \sum_n {nS_{\text{products}}^{\circ} - \sum_{m} {mS_{\text{reactants}}^{\circ}}}

The equation for the reaction is

                        C₂H₄(g) + 3O₂(g) ⟶ 2CO₂(g) + 2H₂O(ℓ)

ΔS°/J·K⁻¹mol⁻¹   219.5      205.0         213.6         69.9

\Delta_{r} S^{\circ} = (2\times213.6 + 2\times69.9) - (1\times219.5 + 3\times205.0)\\\\= 567.0 - 834.5 = \boxed{-267.5 \text{ J}\cdot\text{K}^{-1} \text{mol}^{-1}}

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Explain why the acid-catalyzed dehydration of an alcohol is a reversible reaction, whereas the base-promoted dehydrohalogenation
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electrophile(H⁺) is needed to react with alkene in the first step and nucleophile (OH⁻) is not available in the first step

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What is the net force on a car stopped at a stop sign?
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0 N stopping at stop sign.
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