A balloon with volume 750 cm³ is filled with O₂at 27 °C has a mass of 83.3 g.The mass of empty balloon is 82.1 g.Calculate the pressure of O₂. A)125 kPa B)150 kPa C)250 kPa D)75 kPa E)400 kPa

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Quizplus · Accepted Answer

The mass of O2 is 83.3 g - 82.1 g = 1.2 g. Using the ideal gas law PV = nRT, where n = mass/molar mass = 1.2 g/32 g/mol, R = 8.314 J/mol·K, T = 27°C = 300 K, and V = 750 cm³ = 0.00075 m³, we can solve for P. P = (nRT)/V = (0.0375 mol * 8.314 * 300) / 0.00075 = 125,000 Pa = 125 kPa.

A Balloon with Volume 750 Cm3 Is Filled with O2

A Balloon with Volume 750 Cm³ Is Filled with O₂