You need to calculate the enthalpy change (∆H0) of the reaction A + B > C. How can the enthalpies given for the reaction steps below be combined to give the overall change in enthalpy?

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering

Which type of intermolecular force is pbr3

In the reaction h2co3 (aq) + 3nh3 (aq) = 2 nh4+ (aq) + co3 2-, how many electrons are transferred?