Why does the density of gas in a hot air balloon decrease as the gas is heated?
A. The mass of gas decreases as temperature increases.
B. The mass of gas increases as temperature increases.
C. The volume of gas decreases as temperature increases.
D. The volume of gas increases as temperature increases.
It’s D :)
Hmm, let me think about this one. Ah, got it! The answer is D, the volume of gas increases as the temperature increases. You see, when you heat up the gas in a hot air balloon, it gets all excited and starts moving around more, just like I do when I tell a really funny joke. As a result, the gas particles spread out and take up more space, which means the density decreases. It's like when a crowded room suddenly empties out – there's more space for each person to wiggle and giggle.
The correct answer is D. The volume of gas increases as temperature increases.
According to the ideal gas law, the volume of a gas is directly proportional to its temperature (V ∝ T), assuming constant pressure. When the gas in a hot air balloon is heated, the temperature of the gas increases. This causes the gas molecules to move faster and collide with each other more frequently, exerting a greater force on the balloon's container. This increased force pushes against the walls of the balloon, therefore increasing its volume. As a result, the density of the gas in the hot air balloon decreases because the same mass of gas now occupies a larger volume.
To understand why the density of gas in a hot air balloon decreases as the gas is heated, we need to consider the relationship between temperature, volume, and density of a gas.
According to the Ideal Gas Law, which describes the behavior of gases, the density of a gas is inversely proportional to its volume at constant pressure and temperature. This means that as the volume of a gas increases, its density decreases, and vice versa.
Now, let's consider what happens when gas is heated in a hot air balloon. When the gas is heated, its temperature increases. As a result, the average kinetic energy of the gas molecules also increases. The increased kinetic energy causes the gas molecules to move faster and collide with the walls of the balloon more frequently and with greater force.
As a consequence of these collisions, the gas molecules exert more pressure on the walls of the balloon. To accommodate the increased pressure, the gas expands, occupying a larger volume within the balloon. This expansion of the gas causes its density to decrease because the same amount of gas is now spread over a larger volume.
Therefore, the correct answer is D. The volume of gas increases as temperature increases, leading to a decrease in density.
density = mass/volume and (V1/T1) = (V2/T2)
Reason it out.