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Svet_ta [14]
2 years ago
11

Convert 21 grams of radon into atoms of radon.

Chemistry
1 answer:
monitta2 years ago
7 0

Answer:

The atomic mass of radon is 222.

Explanation:

. That means that one mole of radon weighs 222 grams (222 grams/moles). We can therefore make the following equation:

Grams × (1/222) = Moles of Radon

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The average molecular speed in a sample of Ar gas at a certain temperature is 391 m/s. The average molecular speed in a sample o
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Answer:

550 m/s

Explanation:

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v = \sqrt{\frac{3 \times R \times T}{M} }

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We can use the info of argon to calculate the temperature for both samples.

T = \frac{v^{2} \times M}{3 \times R} = \frac{(391m/s)^{2} \times 39.95g/mol}{3 \times 8.314J/k.mol} = 2.45 \times 10^{5} K

Now, we can use the same expression to find the average molecular speed in a sample of Ne gas.

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