An ideal gas composed of helium atoms is at a pressure of 2.00 atmospheres and a temperature of 35.0$^{\circ}$C.What is the mass density? (He = 4.00u) A) 0.534 kg/m³ B) 0.488 kg/m³ C) 0.400 kg/m³ D) 0.316 kg/m³ E) 0.276 kg/m³

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Quizplus · Accepted Answer

The mass density of an ideal gas can be calculated using the formula: density = (P * M) / (R * T), where P is pressure, M is molar mass, R is the ideal gas constant, and T is temperature in Kelvin. Converting 35°C to Kelvin gives 308 K. Using P = 2 atm, M = 4 g/mol, and R = 0.0821 atm·L/mol·K, the density is approximately 0.316 kg/m³.

An Ideal Gas Composed of Helium Atoms Is at a Pressure