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sertanlavr [38]
3 years ago
11

the diagram shows light striking a pane of glass . some of the light is reflected , and some of the light is transmitted. the le

tters represents six different angles . describe two places where refraction takes place.
Chemistry
1 answer:
GrogVix [38]3 years ago
3 0
When light crosses any barrier 
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When a substance gains or loses energy, it’s _____ changes, or its _____ chafes. Theses two changes do ___happen at the time ; t
Veseljchak [2.6K]

Answer:

When a substance gains or loses energy, its <u>temperature</u> or <u>state</u> changes. These two changes do <u>not</u> happen with respect to time; the temperature remains <u>the same</u> until the change of <u>state</u> is complete.

Explanation:

This statement is about energy and change of the state of the matter. By gaining or losing energy, the physical state of the matter can change into one another. Melting, freezing, condensation, evaporation, sublimation, and deposition are the processes that support to change the physical state of the matter. Change in state and change in the matter do not happen at the same time. A substance gains or loses energy to reach a specific temperature and remains constant until the physical change of matter is completed.

3 0
3 years ago
According to the hypothesis the solar system formed from a cloud of dust and gas
katrin2010 [14]

I assume this is a true or false question. I would say true

5 0
3 years ago
Read 2 more answers
C. Why do chemists routinely test existing chemicals?
frozen [14]

Answer :

The chemists such as analytical chemists determine the structure, composition, and nature of substances by examining and identifying their various elements or compounds. These chemists are crucial to the pharmaceutical industry because pharmaceutical companies need to know the identity of compounds that they hope to turn into drugs.

8 0
2 years ago
From these two reactions at 298 K, V2O3(s) + 3CO(g) → 2V(s) + 3CO2(g); ΔH° = 369.8 kJ; ΔS° = 8.3 J/K V2O5(s) + 2CO(g) → V2O3(s)
gregori [183]

Answer:

ΔG° = -133,1 kJ

Explanation:

For the reactions:

<em>(1) </em>V₂O₃(s) + 3CO(g) → 2V(s) + 3CO₂(g); ΔH° = 369,8 kJ; ΔS° = 8,3 J/K

<em>(2) </em>V₂O₅(s) + 2CO(g) → V₂O₃(s) + 2CO₂(g); ΔH° = –234,2 kJ; ΔS° = 0,2 J/K

By Hess's law it is possible to obtain the ΔH° and ΔS° of:

2V(s) + 5CO₂(g) → V₂O₅(s) + 5CO(g)

Substracting -(1)-(2), that means:

ΔH° = -369,8 kJ - (-234,2 kJ) = <em>-135,6 kJ</em>

ΔS° = - 8,3 J/K - 0,2 J/K =<em> -8,5 J/K</em>

Using: ΔG° = ΔH° - TΔS° at 298K

ΔG° = -135,6 kJ - 298K×-8,5x10⁻³kJ/K

<em>ΔG° = -133,1 kJ</em>

I hope it helps!

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3 years ago
¿Cuál es la Molaridad y Normalidad de 230 grs de HCl disueltos en 680 ml de agua?<br> Cl: 35,5 grs
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Answer:

English? please

Explanation:

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