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Ahat [919]
2 years ago
6

A(n) ____ consists of atoms that have a specific number of protons in their nuclei.

Chemistry
1 answer:
Kamila [148]2 years ago
7 0

Answer:

Solution i think

Explanation:

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The number of particles of 0.2<br> mole​
strojnjashka [21]

Answer:

There are 1.205x10²³ particles in 0.2 moles.

Explanation:

In order to <u>convert from moles to number of particles</u> we need to use <em>Avogadro's number</em>, which states the number of particles contained in 1 mol:

  • 0.2 mol * 6.023x10²³ particles /mol = 1.205x10²³ particles

Thus, there are 1.205x10²³ particles in 0.2 moles.

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2 years ago
The half-life of carbon-14 is about ____________ years.<br><br> Fill in the blank.
katrin2010 [14]
The half-life of carbon-14 is about 5730 years
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5) If a car travels 60 miles for two hours, what is the average speed?
sdas [7]

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30 mi/hr

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3 0
3 years ago
Which of these is an example of matter?
wolverine [178]

Answer:

Air

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It takes up space/ the rest do not

7 0
2 years ago
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Question 9 of 10
aksik [14]

Answer:

The answer is B an open system allows energy and mass to move in and out of it

Hope it helps

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