Which statement best compares potential and kinetic energy?
Objects always have more potential energy than kinetic energy.
Only kinetic energy increases when the velocity of an object increases.
Only potential energy decreases when an object's height increases.
Obiects always have more kinetic energy than potential enerov.

The statement which best compares potential and kinetic energy is below:

Explanation:

Objects always have more kinetic energy than potential energy

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g