a.

The allowed orbits contain the same number of electrons

b.

Within an atom, there are certain allowed orbits

c.

All of the orbits represent the same amount of energy

d.

The orbit with the least energy is farthest from the nucleus

a.

Internal energy

b.

Specific heat capacity

c.

Latent heat of fusion

d.

Heat capacity

a.

The closed end

b.

The middle

c.

The open end

d.

All the parts of the pipe

a.

0.5 mm

b.

1.0 mm

c.

0.2 mm

d.

0.1 mm