has a piece of copper and is running a calorimetry experiment. He wants to know how much energy does a 85.0 gram sample of copper release when it is cooled from 43.0˚C to 14.0˚C? Copper has a specific heat of 0.384 J/g·˚C

Water ionizes by the equation h2o(l)⇌h+(aq)+oh−(aq) the extent of the reaction is small in pure water and dilute aqueous solutions. this reaction creates the following relationship between [h+] and [oh−]: kw=[h+][oh−] keep in mind that, like all equilibrium constants, the value of kw changes with temperature.

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?