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mel-nik [20]
2 years ago
12

Which of the following is NOT true about energy?*

Chemistry
1 answer:
Montano1993 [528]2 years ago
7 0

Answer:

the last one

Explanation:

although energy can be transferred it does not change after a transfer

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A 20.0 gram sample of an element contains 4.95 x 1023 atoms. what is the element?
Sonja [21]
You will want to find how many grams are in a whole mole so you know which element it is. To do this, find out how much of a mole you have.

4.95 x 10^23 atoms / 6.022 x 10^23 atoms (one whole mole of any element) = .8219860511 or ~82% of 1 mole

Now we know that, find what to multiply 20 g by to get the rest of the mole.

1 mole / .8219860511 mole = 1.216565657

20 g x 1.216565657 = ~24.33 g / mol

Now that you have grams per mole, you can look at the periodic table and the molar masses to see which this number is closely aligned.

Your answer is Magnesium (Mg), which has a molar mass of 24.305 g


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2 years ago
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nika2105 [10]
I think the correct answer from the choices listed above is option C. The can <span>from the cupboard will lose carbon dioxide more quickly because it is warmer and gases are less soluble in warmer temperatures. </span> Solubility of gases is a strong function of temperature and as well as pressure.
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3 years ago
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Which of the following could you do to increase the strength of an electromagnet? decrease the number of windings decrease the e
IgorLugansk [536]
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Which is an example of a non aqueous solution
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Answer: gasoline

Explanation:

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Among the options given, gasoline is the correct option. This is because of the fact that gasoline is a crude oil which does not include water as an ingredient.

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Energy is released by the formation of chemical bonds, and energy is

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A chemical reaction involves the formation of new compounds from

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Energy is released by the formation of chemical bonds and this type of

reaction is referred to as exothermic while energy is absorbed when the

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Read more about Chemical reaction here brainly.com/question/16416932

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