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almond37 [142]
3 years ago
9

Which particle is most likely present in the nucleus of the atom

Chemistry
2 answers:
k0ka [10]3 years ago
8 0
Oh protons and neutrons
DIA [1.3K]3 years ago
6 0

Explanation:

An atom consists of three subatomic particles. These are protons, electrons and neutrons.

A proton has a positive charge, an electron has a negative charge and a neutron has no charge.

A nucleus is the central part of an atom. And, inside the nucleus there are protons and neutrons. Whereas electrons move in circular path outside the nucleus.

Hence, we can conclude that most likely protons and neutrons are present in the nucleus of the atom.

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C- more than one light year or B-exactly one light year
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What mass in grams would 5.7L of hydrogen gas occupy at STP?​
tekilochka [14]

Answer:  The correct answer is:  " 0.54 g " .

__________________________________________

Explanation:

Note that "hydrogen gas" is:  

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_________________________________________

The molecular weight of "H" is:  1.00794 g ;

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So, the molecular weight of:  H₂ (g)  is:

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Note the conversion for a gas at STP:

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  1 mol of a gas = 22.4 L gas;

___

i.e. " 1 mol / 22.4 L " ;

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and we are left with:

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 [5.7 * 2.104588 g ] / 22.4  =  ?  g ;

______________________

→ [ 11.9961516  g ] / 22.4 =

          0.53554248214  g ;l

_____________________________

We round this value to:  " 0.54 g " ;

 → since "5.7 L " has 2 (two) significant figures;  

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     and "5.7 L" has fewer significant figures than:

    " 2.104588 " ; or:  " 1.00794 " .

  → as such: We round to "2 (two) significant figures."

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Hope this is helpful.  Wishing you the best in your academic endeavors!

_______________________________

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The answer is A, good luck
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