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Fed [463]
3 years ago
11

How to separate sand from salt

Chemistry
1 answer:
IRINA_888 [86]3 years ago
6 0
Put the salt and sand in some water.
the salt will not be visible but the sand will
now strain the the sand from the water
now boil the water and now the water will boil away and now you will just have salt left.
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Explain how Newton’s cradle demonstrates the law of conservation of energy.
UNO [17]
When power goes up it must come down.
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3 years ago
What is used to determine the number of each atom in an ionic formula?
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the oxidation state of each atom

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3 years ago
HURRYYY!!!!<br> Convert 7.13 x 10^28 atoms of calcium (Ca) to moles of calcium.
puteri [66]

Answer:

<h2>118,438.5 moles</h2>

Explanation:

To find the number of moles in a substance 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 we have

n =  \frac{7.13 \times  {10}^{28} }{6.02 \times  {10}^{23} }  \\  = 118438.538...

We have the final answer as

<h3>118,438.5 moles</h3>

Hope this helps you

4 0
3 years ago
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evablogger [386]
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