Protons+neutrons= i need some i cannot figure this out and its confusing and none of my notes

Select the correct answer. which phrase correctly describes temperature? o a. average rotational kinetic energy of the particles in an object o b. average energy of the particles in an object c. average translational kinetic energy of the particles in an object od. all energy possessed by the particles in an object

The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?