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Stells [14]
3 years ago
9

Besides thermal energy, what other forms of energy can be changed to thermal energy?

Chemistry
1 answer:
LuckyWell [14K]3 years ago
6 0

Answer:

Besides electrical, chemical, and thermal energy, some other forms of energy include mechanical and sound energy. Any of these forms of energy can change into any other form. Often, one form of energy changes into two or more different forms.

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A. star formation begins in a nebula.

Explanation:

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What type of reaction occurs in a hand warmer?<br> Exothermic<br> Endothermic
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The reaction is exothermic.

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In an isothermal gas chromatography experiment using an ECD detector, 1.69 nmols of nchlorohexane, C6H13Cl, was added as an inte
prohojiy [21]

Answer:

The amount of Chlorodecane in the unknown is 0.105nmols

Explanation:

a) Since the GC is in an isothermal state, Chlorohexane C6H13Cl (1.69 nmols) because of its lower boiling point will elute first and Chlorodecane C12H21Cl will elute second.

The area of the first peak corresponding to Chlorohexane is 32434 units.

The area of the second peak corresponding to chlorodecane is 2022 units.

Since the response factor of the compound is not given in question and considering the response factor is same for both the compounds, the answer will be as follow:

1.69 nmols of Chlorohexane gives 32434 units

How much of chlorodecane gives 2022 units

By cross multiplication;

Moles of Chlorodecane = 2022*1.69/32434

                                         =0.105nmols

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3 years ago
Which statement is true if the Hrxn of a reaction is positive?
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True or false sodium is a member of the transition elements
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