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atroni [7]
2 years ago
14

How many atoms are in 9.3moles of lithium?

Chemistry
2 answers:
vladimir1956 [14]2 years ago
3 0

Answer:

3.45 moles Li  contains  2.08 × 10 (to the power of)24  atoms .

Explanation:

The relationship between atoms and moles is:

1  mole atoms =

6.022 × 10 (to the power of)23

atoms

In order to determine how many atoms occupy a given number of moles, multiply the given moles by  

6.022 × 10 (to the power of)23

atoms/mole

.

In the case of 3.45 moles lithium (Li):

3.45 mol Li × 6.022 × 10 (to the power of)23  atoms Li/ 1 mol Li =

2.08 × 10 (to the power of)24

atoms Li  rounded to three

zvonat [6]2 years ago
3 0

Answer: 3.45 moles Li contains 2.08 × 10 (to the power of)24 atoms

Explanation:

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Answer;

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If 20.0g of CO2 and 4.4g of CO2
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The given question is incorrect. The correct question is as follows.

If 20.0 g of O_{2} and 4.4 g of CO_{2}  are placed in a 5.00 L container at 21^{o}C, what is  the pressure of this mixture of gases?

Explanation:

As we know that number of moles equal to the mass of substance divided by its molar mass.

Mathematically,   No. of moles = \frac{\text{mass}}{\text{molar mass}}

Hence, we will calculate the moles of oxygen as follows.

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Total moles = moles of O_{2} + moles of CO_{2}

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And, total temperature  will be:

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According to ideal gas equation,  

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                P = \frac{nRT}{V}

                   = \frac{0.725 mol \times 0.08206 Latm/mol K \times 294 K}{5.00 L}

                    = \frac{17.491089}{5} atm

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or,                = 3.50 atm (approx)

Therefore, we can conclude that the pressure of this mixture of gases is 3.50 atm.

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If a gas has a proportionality constant of 4.32 x 10-4 mol at room temperature for a particular solvent, what will the
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