1.) activation energy is a.) the heat is released in a reaction b.) the energy barrier between reactants and products c.) the energy given off when reactants collide d.) generally very high for a reaction that takes place rapidly 2.) the rate of a chemical reaction normally a.) decreases as temperature increases b.) is slowed down by a catalyst c.) increases as reactant concentration increases d.) decreases as reactant concentration increases does any have the rest of the answers of chemistry lesson 8 unit 3? (3-

the movement of aircraft through clouds can even cause lightning strikes. a single lightning event is a "flash", which is a complex, multi-stage explosively ejected.

explanation:

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"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."