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qwelly [4]
2 years ago
14

Why is chemistry a thing

Chemistry
1 answer:
ivolga24 [154]2 years ago
4 0

Answer:

It's a very good subject!

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Benzene, C6H8, has an enthalpy of fusion = 10.19 kJ/mol. Calculate the amount of energy which is needed to change 88.0 g of soli
Mandarinka [93]

Answer: About 10,200 Joules of heat is required to transform 80.0 g of solid benzene at 5.53°C into liquid benzene, also at 5.53°C.
5 0
3 years ago
Learning Task 1 Match column A with column B. Column A Column B 1. Phase Change -2. Freezing 3. Condensation 4. Melting 5. Evapo
RSB [31]

Change of state occurs when heat is supplied or removed from a substance.

<h3>What is change of state?</h3>

Change of state refers to the changes that occur when a substance changes from one physical state to another due to changes in its temperature.

It is also known as phase change.

Phase Change can also be defined as change from one state to another without a change in chemical composition.

Some of the phase changes include:

  • Freezing: when liquid changes to solid
  • Condensation: when gas changes to liquid
  • Melting: when solid changes to liquid
  • Evaporation: when liquid changes to gas

The other terms associated with phase change include:

  • Boiling point: the temperature at which vapor pressure becomes high that causes bubbles to form inside the body of the liquid
  • Freezing point: temperature wherein a liquid solidifies
  • Melting point: the temperature at which solid turns into a liquid.

Learn more about change of state at: brainly.com/question/18372554

6 0
2 years ago
PLEASE HELP ASAPP!!!!! WILL MARK BRAINLIEST
Aloiza [94]

Answer:

400°C

Explanation:

22,000 cal / (0.11 cal/g°C x 500 g) = 400°C

3 0
2 years ago
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Which type of scientist would most likely study how electricity could be
miv72 [106K]

Answer:

A physicist

Explanation:

Physics is that aspect of science that deals with nature and matter in relation to energy. Electricity is a source for energy

7 0
2 years ago
How can you tell a chemical change has happened?
Paladinen [302]

Answer:

How can I tell if a chemical reaction is occurring? A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change.

Explanation:

4 0
3 years ago
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