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xeze [42]
3 years ago
6

How many atoms are in 4.00 moles of helium?

Chemistry
2 answers:
7nadin3 [17]3 years ago
4 0

Answer:

Number of atoms in 4.00 moles of helium = 2.4092\times 10^{24}

Explanation:

Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by N_0.

Avogadro constant:-

N_a=6.023\times 10^{23}

Thus,

1 mole of helium contains  6.023\times 10^{23} atoms

So,

4.00 moles of helium contains  4.00\times 6.023\times 10^{23} atoms

<u>Number of atoms in 4.00 moles of helium = 2.4092\times 10^{24} </u>

irga5000 [103]3 years ago
3 0
<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles.

4 mol He (  </span>6.022 x 10^23 atoms / mole ) = 2.4088 x 10^34 atoms He
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Answer:

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Explanation:

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I'll answer the question by filling in the blank spaces

"The atomic mass of an element is equal to the total number of proton and neutron in a particular atom of the element. The atomic mass of an element is equal to the atomic weight. Its mass number one-twelfth of the mass of carbon-12 atom a weighted mass of all naturally occurring isotopes of the elements. Its atomic mass is the average mass of all the naturally occurring isotopes of the element."

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8 0
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Illusion [34]

Answer: low temperature

Explanation:-

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8 0
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Read 2 more answers
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aleksklad [387]

Answer:

Correct answers: 2 and 3

Explanation:

1- correct would be: Isolation of ibuprofen is not dangerous, but it is necessary because only one enantiomer has effect on interaction with biologic <em>diana</em>

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<em>3: Correct! we can only observe their properties, like polirized light rotation or separation in an assimetric column for chromatography.</em>

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8 0
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sukhopar [10]

Answer:

-255.4 kJ

Explanation:

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ΔG = -255.4 kJ

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