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svp [43]
2 years ago
10

*10 points* PLS HELP!!!!!!!!!!!!!!!!

Chemistry
2 answers:
lisabon 2012 [21]2 years ago
7 0

Answer:

b aluminum foil have a good day

CaHeK987 [17]2 years ago
5 0
Aluminum foil I think but if not goodluck :)
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All of the following require breaking and forming chemical bonds except
skad [1K]
As far as I know, the answer is B (breaking a rock)
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How does evaporation show interactions among the hydrosphere and atmosphere?
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water evaporates from the ocean into atmosphere. water vapour condenses to form clouds. clouds produce rain. rainwater needed for plant growth.

Explanation:

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At 500 K in the presence of a copper surface , ethanoldecomposes according to the equation
klio [65]

Answer:

Explanation:

rate of reaction

= -ve change in pressure of ethanol / time

= - (250 -237 )/100 = - 13 / 100 torr/s

= - 0.13 torr/s

next

- (237 - 224 )/100 = - 13 / 100 torr/s

= - .13 torr/s

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So rate of reaction is constant and it does not depend upon concentration or pressure of reactant .

So order of reaction is zero.

rate of reaction =K  [C₂H₅OH]⁰

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In 900 s decrease in pressure

= 900 x .13 = 117

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8 0
3 years ago
Which of the following atoms would be expected to be diamagnetic in the ground state?
Rufina [12.5K]

The atoms that would be expected to be diamagnetic in the ground state is  magnesium

The magnetism of an atom refers to its electronic configuration. A diamagnetic atom is an atom whose electrons are all paired.

A paired electron is an electron that occurs in pairs in its orbital shell.

At their respective ground state, the electronic configuration of the given elements are as follows:

The electronic configuration of magnesium is 1s²2s²2p⁶3s².  As such its a diamagnetic atom.

The electronic configuration of Potassium is 1s²2s²2p⁶3s²3p⁶4s¹. Hence, Potassium has one unpaired electron in its outermost shell.

The electronic configuration of Chlorine is 1s²2s²2p⁶3s²3p⁵. Hence, Chlorine has one unpaired electron in its outermost shell.

The electronic configuration of Cobalt is 1s²2s²2p⁶3s²3p⁶3d⁷4s². Hence, the unpaired electrons of Cobalt in its outermost shell are three.

Therefore, the atoms that are diamagnetic in the ground state is magnesium.

Learn more about diamagnetic atoms here:

brainly.com/question/18865305?referrer=searchResults

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2 years ago
What would happen if the earths core cooled
maria [59]

Answer:

Shutterstock

Explanation:

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