A 3.2-L volume of neon gas (Ne) is at a pressure of 3.3 atm and a temperature of 330 K. The atomic mass of neon is 20.2 g/mol, Avogadro's number is 6.022 · 10²³ molecules/mol, and the ideal gas constant is R = 8.314 J/mol · K = 0.0821 L · atm/mol · K. The mass of the neon gas is closest to A) 7.9 × 10^-3 kg. B) 4.6 × 10^-3 kg. C) 3.8 kg. D) 7.8 kg. E) 7.8 × 10² kg.

Question

Quizplus · Accepted Answer

Using the ideal gas law, PV = nRT, we can solve for n (moles of gas). Then, multiply by the molar mass of neon to find the mass. The calculation gives approximately 7.9 × 10^-3 kg.

A 32-L Volume of Neon Gas (Ne) Is at a Pressure