Mass is often the most common and weight is its close to that but I'd go with mass
The answer is a. Chemical change.
Explanation:
Air has a heat capacity of about 700 Joules per kg per °K and a density of just 1.2 kg/m3, so its initial energy would be 700 x 1 x 1.2 x 293 = 246,120 Joules
The answer is d.) fission :)
Look those up it will be easier
