The density will be 50 % from the initial value.
If the amount of helium doesn't change, then twice the volume means half the density.
The density is reduced to 50% (half) of its original value.
The gas will expand as it is heated.
it becomes low
The air warms and expands, becoming lighter than the surrounding air, thus lifting the balloon.
It expands as the surrounding air pressure lessens. It also cools along with the ambient temperature.
The density is reduced to 50% (half) of its original value.
It is reduced by haft
The balloon expands.
It expands.
The air becomes less dense as it expands making the balloon appear to self inflate.
The density decreases.
The density decreases by half. You find the answer by knowing that density is equal to mass divided by the volume. If the mass stays constants and the volume is doubled, then the density is halved.
The density decreases by half. You find the answer by knowing that density is equal to mass divided by the volume. If the mass stays constants and the volume is doubled, then the density is halved.
The air inside expands.
The gas will expand as it is heated.
it becomes low
The air warms and expands, becoming lighter than the surrounding air, thus lifting the balloon.