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irina1246 [14]
3 years ago
6

If distance, d, is proportional to time, t, and at time t =2.00 seconds, the distance is 6.20 m, find the distance when t = 3.50

s.
Chemistry
1 answer:
Allushta [10]3 years ago
5 0
At 3.5s the distance would be 10.85

Find 1/4th of 2.00 and add that to 6.2
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12. A helium-filled weather balloon has a volume of 2.4 x 102 L at 99 kPa pressure and a
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Answer:

The answer to your question is 8.74 g of He

Explanation:

Data

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mass = ?

Process

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P = 99 kPa = 99000 Pa

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

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2.- Convert temperature to °K

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3.- Substitution

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      n = PV / RT

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      n = 24.48 / 22.386

      n = 1.093 moles

4.- Calculate the grams of He

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

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