Use R = 82 *10^-5 M³

question 42

Multiple Choice

Use R = 8.2 *10^-5 m³ . atm/mol . K and N_A = 6.02 * 10²³ mol^-1. The approximate number of air molecules in a 1 m³ volume at room temperature (300 K) and atomospheric pressure is:

• A) 41
• B) 450
• C) 2.5 * 10²⁵
• D) 2.7 *10²⁶
• E) 5.4 *10²⁶

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