Which reverse the normal flow of thermal energy

What is ur life about if I don't have one?

A student mixes two water solutions with an initial temperature of 25 degrees Celsius to form a final solution with a mass of 65.0 g at 30.0 degrees Celsius. What is the heat change in kJ for this reaction

Calculate the ph of a 0.170 m nh3-0.187 m nh4cl buffer when a. 20.0 ml of 0.100 m hcl, b. 20.0 ml of 0.100 m naoh, are added to 200 ml of buffer. ka nh4 + = 5.69 x 10-10

What change results in the formation of different substances

What is the salt that is produced when ammonia (NH3) and hydrochloric acid (HCl) react together? NCl NH4 + NH4Cl NH2Cl

Suppose you went bowling, but instead of a bowling ball you rolled a ping pong ball down the alley. What do you think would happen?

Which expression represents the ΔH for a chemical reaction in terms of the potential energy, PE, of its products and reactants?

Identify the element that has a ground state electronic configuration of [ar]4s23d104p 3.

A geneticist has discovered a new compound that is made up of a small number of identical subunits. The subunits are joined end to end in long chains. Based on this information, what best can be concluded about these subunits? A. They are ketones. B.

What kind of cell keep dirt off your body's organs