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2 years ago

What does the law of conservation of energy imply?

Chemistry

1 answer:

zheka24 [161]2 years ago

4 0

Answer:

B. That energy can only be converted between different forms

Explanation:

The law of conservation of energy implies that energy can only be converted between different forms but can neither be created nor destroyed.

Energy is the ability to do work. It is very important physical quantity that is essential to all life forms.

Energy according to the law of conservation of energy is not produced neither is it destroyed.

Energy is simply transformed from one form to another.

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Determine the number of moles of air present in 1.35 L at 760 torr and 17.0 C. Which equation should you use?

Vanyuwa [196]

C. N = PV/RT is the anwser to your question

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2 years ago

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A 75.0-milliliter lightbulb is filled with neon, Theie are 7.16 10 4 moles ol gas In it, and the absolute pressure Is 116.8

avanturin [10]

Answer:

Answer:- 1467 K

Solution:- It asks to calculate the kelvin temperature of the light bulb. Looking at the given info, it is based on ideal gas law equation, PV=nRT.

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2 years ago

How many molecules of HCl would react with 1 mole of Mg0?<br> Mg0 +2HCI<br> MgCl, + H,0

Len [333]

Answer:

12.044 ×10²³ molecules of HCl

Explanation:

Given data:

Number of moles of MgO = 1 mol

Number of molecules of HCl react = ?

Solution:

Chemical equation:

MgO + 2HCl → MgCl₂ + H₂O

with 1 mole of MgO 2 moles of HCl are react.

Number of molecules of HCl react:

1 mole contain 6.022×10²³ molecules

2 mol × 6.022×10²³ molecules / 1 mol

12.044 ×10²³ molecules

5 0

2 years ago

Which condition causes rocks to exhibit ductile deformation?

trasher [3.6K]

Answer: Option (A) is the correct answer.

Explanation:

The bending or flow of rocks without breaking, like clay, is known as ductile deformation.

At high temperature, rocks are malleable. As a result, they stretch more when high pressure or stress is applied. Thus, more ductile structures are formed.

Therefore, we can conclude that high pressure and temperature causes rocks to exhibit ductile deformation.

7 0

2 years ago

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Compound a, c8h10, undergoes nitration to give 2 products. The 1h nmr spectrum of a shows a complex five-proton multiplet at 7.2

alekssr [168]

<h3>Answer:</h3>

Compound A is Ethylbenzene.

<h3>Explanation:</h3>

The structure of Ethylbenzene was elucidated and finalized based on following facts:

1) The presence of multiplet signal ranging from δ 7.27 to 7.40 ppm confirms the presence of aromatic protons. Also the statement says that this signal is for 5 protons indicating that the benzene ring is mono substituted.

2) The substituted group on benzene is Ethyl because the quartet for two protons shows that two protons (-CH₂-) are coupled with a CH₃ group. Hence, the ethyl group gives one quartet and one triplet signal.

3) The chemical reaction stated in statement is Nitration reaction. Also, the alkyl group (ethyl) is ortho-para directing in nature. Hence, it will give two products i.e. 1-Ethyl-2-nitrobenzene and 1-Ethyl-4-nitrobenzene respectively.

Attached figure gives the calculated NMR spectrum of Ethylbenzene and the chemical shifts calculated are almost near to the given values. Also, the two products formed are shown.

8 0

2 years ago