Balloons may contain tiny microscopic holes, which allow the gas particles withi

Question

Balloons may contain tiny microscopic holes, which allow the gas particles within to escape via effusion. Suppose a 4.50 L balloon is filled with 1.210 g of He to a pressure of 1.62 atm. A second balloon is filled with 39.69 g of Xe to the same volume and pressure. From which balloon will atoms effuse more quickly? (a) Both effuse at the same rate, (b) Xe balloon, (c) Not enough information is provided, and (d) He balloon. How many times faster does this gas effuse compared to that in the other balloon?

Explanation / Answer

The effusion rate depends directly on mass of speciers

so

For Helium, since it is much smaller, it will effuse FASTER than Xenon

This is accoridng to Grahams law

Rate He/ Rate Xe = sqrt( MW Xe / MW of He)

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