Atmospheric Pressure in Interstellar Space Is Approximately 1 × 10^-17

question 12

Multiple Choice

Atmospheric pressure in interstellar space is approximately 1 × 10^-17 torr at a temperature of -173 °C. How many gas molecules are present in 25,000 L of interstellar space (about the volume of a bedroom) ?

• A)2 × 10⁷ molecules
• B)4 × 10^-17 molecules
• C)2 × 10¹⁰ molecules
• D)3 × 10^-14 molecules

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