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Effectus [21]
3 years ago
13

Write about Archimedes principle​

Biology
1 answer:
fgiga [73]3 years ago
8 0

Answer:

Archimedes principle states that when a body is totally or partially immersed in a fluid, it experiences an upthrust which is equal to the weight of the fluid displaced.

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If a chemical reaction is reversed, what happens to the enthalpy of the reaction?
nataly862011 [7]

Answer:   C. The sign of the enthalpy of the reaction reverses.

Explanation: Enthalpy of a reaction is the net heat absorbed or released  during a chemical reaction.It is represented by \Delta H. It is negative for exothermic reactions in which heat is released and is positive for endothermic reactions in which heat is absorbed.

When a chemical reaction is reversed the heat of the reaction changes its sign.

CaCO_3\rightarrow CaO+CO_2   \Delta H=+ve

The decomposition of calcium carbonate is an endothermic reaction as heat is required to break the bonds and thus energy is absorbed.

CaO+CO_2\rightarrow CaCO_3    \Delta H=-ve

When the reaction is reversed, the reaction becomes exothermic as now bonds are getting formed and energy is released.

4 0
3 years ago
Read 2 more answers
Epithelial tissue always has a free?
SpyIntel [72]
The underside of epithelial tissue<span> is anchored by a basement membrane to connective </span>tissue<span>.</span>
7 0
4 years ago
Which statements describe social behavior? Check all that apply
elena-14-01-66 [18.8K]

Answer:

social behavior refers to the interaction that occur

Explanation: if I'm wrong go Randonauting

6 0
4 years ago
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During pregnancy under what condition is Rh factor incompatibility a problem
Murljashka [212]

Answer:

what type of qustion is this

Explanation:

6 0
3 years ago
The _ states that the forces that are changing Earth's surface today are the same forces that changed Earth's surface in the pas
tino4ka555 [31]

The uniformitarianism states that the forces that are changing Earth's surface today are the same forces that changed Earth's surface in the past which is because of the presence of the same types of agents being present.

<h3 /><h3>What is Uniformitarianism?</h3>

This type of doctrine which was founded by James Hutton and made popular by Charles Lyell in the 19th century talks about how the earth's geologic processes are the same as a result of the agents of weathering being the same in this type of scenario.

Weathering on the other hand can be defined as the process in which rocks are broken down into smaller particles to form different types of soil. The agents of weathering has been the same today and in the past which makes it constant.

Hence, the reason why Uniformitarianism was chosen as the most appropriate choice.

Read more about Uniformitarianism here brainly.com/question/1948962

#SPJ1

8 0
2 years ago
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