Ideal Gas Law: A 4.2-L flask of ideal neon gas (which is monatomic) is at a pressure of 3.3 atm and a temperature of 450 K. The atomic mass of neon is 20.2 g/mol. How many neon atoms are in the flask? (R = 8.31 J/mol ? K, 1 atm = 101 kPa, NA = 6.022 × 1023 molecules/mol)
A. 2.3 × 1023
B. 2.3 × 1022
C. 6.9 × 1023
D. 2.3 × 1025
E. 6.9 × 1022
Answer: A
Physics & Space Science
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