Which organ of the respiratory system is located inside the lungs?(1 point) nasopharynx

trachea

larynx

bronchial tube

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Particles vibrate in a rigid structure and do not move relative to their neighbors.

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)