1. Match each example of a reaction with the correct reaction type. Mg + 2H20 Mg(OH)2 + H2
8Fe + Sg → Fes
2NaCl - 2Na + Cl2
2KOH + H2SO4 → K2SO4 + 2H20

How are isotopes of the same chemical element alike? how are they different?

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.