Which reaction is NOT an example of neutralisation?

#1
KOH + H2CO3 → K2CO3 + H2O

#2
CaCO3 + 2HCOOH → (HCOO)2Ca + H2O + CO2

#3
2H2O2 → 2H2O + O2

#4
H+ + OH− → H2O

100mg magnesium reacts with 20ml of 1.0m hcl

Using complete sentences, explain how to predict the products and balance the reaction between sulfuric acid and potassium hydroxide.

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.