A balloon contains 10.0 g of neon gas. With the temperature kept constant, 10.0 g of argon gas is added. What happens?

Question

Quizplus · Accepted Answer

According to Avogadro's law, at constant temperature and pressure, equal volumes of gases contain the same number of molecules. Since both neon and argon have similar molecular sizes, the addition of 10.0 g of argon gas would result in a volume increase of less than 2 times. Therefore, the best choice is B. The amount of gas in the balloon doubles, but the volume does not double. The pressure remains constant since the temperature is kept constant.

A Balloon Contains 10