Chemistry, 28.10.2020 17:40 shaakiraak

Water vapor inside an aluminum can has a pressure of 1.00 atm at a temperature of 120.°С. What is the pressure of the gas when the
temperature is dropped to 100.°C?*

Answers: 3

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Answers

Answer from: krlx

P2 = 0.95atm

Explanation:

Using Gay Lussac's equation as follows

P1/T1 = P2/T2

Where;

P1 = initial pressure

T1 = initial temperature

P2 = final pressure

T2 = final temperature

According to the information provided in this question; P1 = 1.00atm, T1 = 120°C, P2 = ?, T2 = 100°C

We need to convert temperature in °C to K

T1 (K) = 120°C + 273K = 393K

T2 (K) = 100°C + 273K = 373K

Hence;

P1/T1 = P2/T2

1.00/393 = P2/373

373 × 1 = 393 × P2

373 = 393P2

P2 = 373/393

P2 = 0.949

P2 = 0.95atm

Answer from: Quest

assuming that your periodic table has eighteen columns, you should highlight the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the $3d$ have energy higher than those in the $4 s$ orbital while lower than those of the $4 p$ orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the $4s$ orbital is therefore filled right after $3p$ orbitals and before $3 d$ orbitals.

potassium has electron configuration $[\text{ar}] 4 s^{1}$ and calcium $[\text{ar}] 4 s^{2}$ . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration $[\text{ar}] 4 s^{2} \; 3d^{1}$ and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the $ns^{2} \; (n-1) p^{1}$ and should be highlighted as well.

Answer from: Quest

The answer should be vaporization

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Water vapor inside an aluminum can has a pressure of 1.00 atm at a temperature of 120.°С. What is t...

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