Help !! 1. What are the two categories of energy a substance can possess: _ & _
2. Define (in your own words) potential energy (PE) and kinetic energy (KE):

a. Potential energy:

b. Kinetic energy:

3. Briefly describe how the KE and PE change as a child
swings on a swing:

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

a electronegativity decreases beacuse the size of nucleus is bigger.

the answer is d. 74.02