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Ainat [17]
3 years ago
11

5. A 4.44 L container holds 0.481 mol of O2 at 22.6°C. What is the pressure of the tank?

Chemistry
2 answers:
mamaluj [8]3 years ago
8 0

Answer:  The pressure of the tank will be 2.63 atm

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = ?

V = Volume of gas = 4.44 L

n = number of moles = 0.481

R = gas constant =0.0821Latm/Kmol

T =temperature =22.6^0C=(22.6+273)K=295.6K

P=\frac{nRT}{V}

P=\frac{0.481mol\times 0.0821Latm/K mol\times 295.6K}{4.44L}=2.63atm

The pressure of the tank will be 2.63 atm

katovenus [111]3 years ago
3 0

Answer: The pressure of given tank is 2.63 K.

Explanation:

The given data is as follows.

      V = 4.44 L,          n (no. of moles) = 0.481 mol,

      T = 22.6^{o}C = (22.6 + 273) K = 295.6 K

      R (ideal gas constant) = 0.0821 atm L/mol K

Now, using the ideal gas equation we will calculate the pressure of the given tank as follows.

               PV = nRT

 P \times 4.44 L = 0.481 mol \times 0.0821 atm L/mol K \times 295.6 K

              P = 2.63 atm

Therefore, we can conclude that the pressure of given tank is 2.63 K.

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The fraction of the original amount remaining is closest to 1/128

<h3>Determination of the number of half-lives</h3>
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n = t / t½

n = 28 / 4

n = 7

<h3>How to determine the amount remaining </h3>
  • Original amount (N₀) = 100 g
  • Number of half-lives (n) = 7
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N = N₀ / 2ⁿ

N = 100 / 2⁷

N = 0.78125 g

<h3>How to determine the fraction remaining </h3>
  • Original amount (N₀) = 100 g
  • Amount remaining (N)= 0.78125 g
  • Fraction remaining =?

Fraction remaining = N / N₀

Fraction remaining = 0.78125 / 100

Fraction remaining = 1/128

Learn more about half life:

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PLEASE HELP ME ASAPPP!?
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7 0
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schepotkina [342]

Answer:

b. 6.02 x 1023 molecules

Explanation:

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The number of moles in 27.6g ammonia is 27.6 ÷ 17 = 1.62 mol.

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A 1.85 kg textbook is sitting on a bookshelf 2.23 m above the floor. How much potential energy does it have?
neonofarm [45]

Answer:

\boxed {\boxed {\sf 40.4299 \ Joules}}

Explanation:

Potential energy is energy due to position. It is the product of mass, height, and acceleration due to gravity.

PE= m \times g \times h

The mass of the textbook is 1.85 kilograms. Assuming this is on Earth, the acceleration due to gravity is 9.8 meters per square second. The height is 2.23 meters.

  • m= 1.85 kg
  • g= 9.8 m/s²
  • h= 2.23 m

Substitute the values into the formula.

PE = 1.85 \ kg \times 9.8 \ m/s^2 \times 2.23 \ m

Multiply the first 2 numbers together.

PE=18.13 \ kg*m/s^2 *2.23 \ m

Multiply again.

PE= 40.4299 \ kg*m^2/s^2

  • 1 kilogram square meter per square second (1 kg*m²/s²) is equal to 1 Joules (J)
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PE= 40.4299 \ J

The textbook has <u>40.4299 Joules of potential energy.</u>

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