3 years ago

Describe one everyday situation in which it would be useful to identify an unknown substance

1 answer:

5 0

Say that you stomach is not agreeing with fizzy drinks so you have to identify whether if there is carbon dioxide in it or not, but is it is you would not want to share it find another way ;)

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Why are elements organized in the same group or families

VladimirAG [237]

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Calculate the number of moles in the following: 2.8 X 10^24 atoms of Cl2

vova2212 [387]

Answer:

<h3>The answer is 4.65 moles</h3>

Explanation:

To find the number of moles given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 2.8 × 10²⁴ atoms of Cl2

So we have

$n = \frac{2.8 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 4.65116279069...$

We have the final answer as

<h3>4.65 moles</h3>

Hope this helps you

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In an electric current, the ___ particles flow or are pushed along a path

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The negative particles flow or are pushed along a path

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