Chemistry, 25.03.2021 05:40 ShortCakes02

If a gas is cooled from 222 K to 125 K and the volume is kept constant, what would be the final pressure if the original pressure was 760 mmHg?

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Answer from: 2018jonw

Assuming the mass of the gas also remains constant, this problem is an straightforward application of Gay-Lussac’s gas law: P1/T1 = P2/T2. That is, at a constant volume, the pressure and temperature of a gas are directly proportional.

We know the initial and final temperatures of the gas (T1 = 222 K; T2 = 125 K) and the initial pressure (760 mmHg). And we want to know what the final pressure would be. Since pressure and temperature are directly proportional and the final temperature is less than the initial temperature, we should expect the final pressure (P2) to be less than 760 mmHg.

Rearranging Gay-Lussac’s law to solve for P2, we obtain P2 = P1T2/T1. Plugging in our quantities, we get our final pressure: P2 = (760 mmHg)(125 K)/(222 K) = 428 mmHg.

Answer from: Quest

Jehdhdhdhehejeje

Answer from: Quest

1.consider the following balanced equation and answer parts a through. show calculations for each part.

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.

explanation:

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If a gas is cooled from 222 K to 125 K and the volume is kept constant, what would be the final pre...

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