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Ket [755]
3 years ago
9

Which answer below correctly identifies the type of change and the explanation for the boiling of water?

Chemistry
2 answers:
lesantik [10]3 years ago
7 0
Boiling Water is a physical change. When water gets to a certain temperature, it's boiling point starts. 
Vesnalui [34]3 years ago
6 0
Boiling is when a liquid is being converted to a gas. but the ending product is still the same molecule. in other words, when you boil water to become vapor, the liquid before was liquid water (H2O) and the vapor after is still a water but now in a gaseous state. because the molecule is the same, we can say that boiling is a physical change.
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How many moles of gallium chlorate, Ga(ClO3)3, must react in order to produce 674 kJ of energy according to the following reacti
Valentin [98]

Answer:

10.3 mol Ga(ClO₃)₃

Explanation:

Let's consider the following balanced thermochemical equation.

2 Ga(ClO₃)₃(s) ⇒ 2 GaCl₃(s) + 9 O₂(s)  ΔH = - 130.4 kJ

According to the balanced thermochemical equation, 130.4 kJ of heat are released when 2 moles of gallium chlorate react. The number of moles of gallium chlorate that must react to produce 674 kJ of energy is:

674 kJ × 2 mol Ga(ClO₃)₃/130.4 kJ = 10.3 mol Ga(ClO₃)₃

7 0
3 years ago
What breaks and shatters easily?
Sergio [31]
Glass breaks and shatter easily. 
4 0
4 years ago
Read 2 more answers
Which best describes a heterogeneous mixture? 0 A table salt and water O B. alcohol and water O C. oil and vinegar O D. hot tea
Oksi-84 [34.3K]

Answer:

oil and vinegar

the rest would mix well so you can't determine the individual components

Explanation:

6 0
3 years ago
What must happen for an electron to return to its original energy level from a higher energy level?
attashe74 [19]

An electron should emit energy to return to its original energy level from a higher energy level.

<h3>What is an energy level?</h3>

Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found.

The electron absorbs the energy and jumps to a higher energy level. In the reverse process, emission, the electron returns to the ground state by releasing the extra energy that is absorbed.

Hence, an electron should emit energy to return to its original energy level from a higher energy level.

Learn more about the energy level here:

brainly.com/question/17396431

#SPJ1

3 0
2 years ago
When hydrogen peroxide (H2O2) is used in rocket fuel, it produces water and oxygen (O2): Can someone help with parts B and C?
Paladinen [302]

Answer:

Explanation: A foam forms when bubbles of a gas are trapped in a liquid or solid. In this case oxygen is generated when hydrogen peroxide breaks down into oxygen and water on contact with catalase, an enzyme found in liver. Enzymes are special protein molecules that speed up chemical reactions.

7 0
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