The rate constant of a second-order reaction is 3.86 x 10−2 M-1 s-1. If the concentration of reactant A is 0.160 M after 75.6 sec, what was the initial concentration, [A]o? (Assume the reaction is A → B + C)

Which statement accurately describes the relationship between air pressure, air density, or altitude? as altitude increases, pressure increases.as altitude increases, air density increases.air pressure and density are lowest at sea level.denser air exerts more pressure than less dense air.

Can someone me with 1 to 4 plz. fast

What is the standard unit of measure for acceleration?