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igor_vitrenko [27]
3 years ago
13

Which of there is an indication that a chemical reaction has occurred?

Chemistry
1 answer:
Komok [63]3 years ago
6 0
Answer is (b) , because a chemical change happened
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How many particles are in 3.2 mole of neon gas
Cerrena [4.2K]

There are 1.93 x 10²⁴ particles

<h3>Further explanation</h3>

Given

3.2 moles of Neon gas

Required

Number of particles

Solution

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

<em>1 mol = 6.02.10²³ particles </em>

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

So the number of particles for 3.2 moles :

N = 3.2 x 6.02.10²³

N = 1.93 x 10²⁴

or

we can describe it using Avogadro's number conversion factor

\tt 3.2~moles\times \dfrac{6.02\times 10^{23}}{1~mole}=1.93\times 10^{24}

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3 years ago
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Sav [38]

Answer:

not sure

Explanation:

a physical change (can)change.,....

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4 years ago
What kind of speed occurs when an object covers equal distance in an equal amount of time?
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Not 100% sure if its right.

When an object covers equal distances in equal amounts of time, it is moving at a constant speed.

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3 years ago
Is ineffective collision's the answer? Please correct me if not, thank you. :)
AleksAgata [21]
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