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vesna_86 [32]
3 years ago
14

How many atoms are present in 34.228 g of sodium

Chemistry
1 answer:
PolarNik [594]3 years ago
4 0

To find the amount of atoms (or molecules) of any element, we multiply the number of mols of element with Avogadro's Number, <span><span>6.022⋅<span>1023</span></span> </span>

<span><span>1.55mol</span> </span> <span><span>Na</span> </span> <span><span><span>6.022⋅<span>1023</span></span><span>1mol</span></span> </span> = <span><span>9.33⋅<span>1023</span></span> </span> atoms of <span>N<span>a </span></span>

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Answer:

The answer to your question is 8.74 g of He

Explanation:

Data

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Process

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P = 99 kPa = 99000 Pa

                   1 atm --------------- 101325 Pa

                    x       ---------------   99000 Pa

                   x = (99000 x 1) / 101325

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2.- Convert temperature to °K

°K = 273 + 0

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3.- Substitution

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- Solve for n

      n = PV / RT

      n = (0.977)(2.4 x 10²) / (0.082)(273)

      n = 24.48 / 22.386

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4.- Calculate the grams of He

          8 g -------------------- 1 mol

           x    -------------------- 1.093 moles

           x = (1.093 x 8) / 1

           x = 8.74 g                      

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3 years ago
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Question
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Answer:

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Answer:

0.0123 moles

Explanation:

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