A toy balloon is initially at a temperature of T = 20°C. Its initial volume is 0.0042 m3 (It is a 10 cm radius sphere). Assume that the pressure in the balloon always equals atmospheric pressure, 101.3 kPa.
The new temp was found to be 52.23°C
By how many Joules did the internal energy of the gas in the balloon increase? Air is almost entirely diatomic gas.
The Attempt at a Solution
I keep getting 1.17e-4, and it says i am off by a power of 10. I am not sure where I am messing up