The pressure in an experimental container of Campbell's primordial soup is 12.0 atm. The atmosphere is 25.0% O2, 15.0% N2, and the rest is H2. What is the partial pressure of H2 ? O A. 1.80 atm O B. 3.00 atm C. 6.00 atm O D. 7.20 atm O E. 12.0 atm

Biochemistry
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ISBN:9781319114671
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Chapter1: Biochemistry: An Evolving Science
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**Question:**

The pressure in an experimental container of Campbell's primordial soup is 12.0 atm. The atmosphere is 25.0% O₂, 15.0% N₂, and the rest is H₂. What is the partial pressure of H₂?

**Options:**

- A. 1.80 atm
- B. 3.00 atm
- C. 6.00 atm
- D. 7.20 atm
- E. 12.0 atm

**Explanation:**

To find the partial pressure of H₂, first determine the percentage of H₂ in the mixture. Given that the total is 100%, and 25% is O₂ and 15% is N₂, the percentage of H₂ is:

100% - (25% + 15%) = 60%

Now, use the total pressure to find the partial pressure of H₂:

Partial pressure of H₂ = (percentage of H₂ / 100) × total pressure
= (60/100) × 12.0 atm
= 7.20 atm

Therefore, the partial pressure of H₂ is 7.20 atm. Thus, the correct answer is D. 7.20 atm.
Transcribed Image Text:**Question:** The pressure in an experimental container of Campbell's primordial soup is 12.0 atm. The atmosphere is 25.0% O₂, 15.0% N₂, and the rest is H₂. What is the partial pressure of H₂? **Options:** - A. 1.80 atm - B. 3.00 atm - C. 6.00 atm - D. 7.20 atm - E. 12.0 atm **Explanation:** To find the partial pressure of H₂, first determine the percentage of H₂ in the mixture. Given that the total is 100%, and 25% is O₂ and 15% is N₂, the percentage of H₂ is: 100% - (25% + 15%) = 60% Now, use the total pressure to find the partial pressure of H₂: Partial pressure of H₂ = (percentage of H₂ / 100) × total pressure = (60/100) × 12.0 atm = 7.20 atm Therefore, the partial pressure of H₂ is 7.20 atm. Thus, the correct answer is D. 7.20 atm.
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