a balloon has a volume of 0.5 L at 20 degrees celsius. what will the volume be if the balloon heated to 150 degrees celsius? assume constant pressure and mass. I got 0.7218 L.

To find the final volume of the balloon when heated to 150 degrees Celsius, assuming constant pressure and mass, you can use Charles's Law. Charles's Law states that the volume of a given amount of gas is directly proportional to its temperature, as long as the pressure and amount of gas remain constant.

The formula for Charles's Law is:

V1 / T1 = V2 / T2

Where:
V1 = Initial volume of the gas
T1 = Initial temperature of the gas
V2 = Final volume of the gas
T2 = Final temperature of the gas

In this case, the initial volume is 0.5 L at 20 degrees Celsius, and we want to find the final volume when the temperature is 150 degrees Celsius. We can set up the equation as follows:

0.5 L / 20°C = V2 / 150°C

Now we can solve for V2:

V2 = (0.5 L / 20°C) * 150°C
V2 = 7.5 L°C / 20
V2 = 0.375 L
Therefore, according to the calculations, the final volume of the balloon when heated to 150 degrees Celsius would be 0.375 L, not 0.7218 L as you stated.

V1/T1 = V2/T2 so V2 = V1T2/T1