How many grams of oxygen are needed to react with excess methane in the following reaction, in order to produce 325 kJ of energy?CH4+ 2 O2→CO2+ H2OH = -890.4 kJ with explanation

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.