_(NH4)3N I
_Cr(CrO2)2 →
+
L(NH4)2Cro
+
| Cr₃ N4

Balancing equations

100mg magnesium reacts with 20ml of 1.0m hcl

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

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.