A 42-L Flask of Ideal Neon Gas (Which Is Monatomic) Is

question 80

Multiple Choice

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? $( R = 8.31$ $\left. \mathrm { J } / \mathrm { mol } \cdot \mathrm { K } , 1 \mathrm {~atm} = 101 \mathrm { kPa } , N _ { \mathrm { A } } = 6.022 \times 10 ^ { 23 } \mathrm { molecules } / \mathrm { mol } \right)$

• A) \(2.3 \times 10^{22}\)
• B) \(6.9 \times 10^{22}\)
• C) \(2.3 \times 10 ^ { 25 }\)
• D) \(6.9 \times 10^{23}\)
• E) \(2.3 \times 10 ^ { 23 }\)

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