Name the bases which are used for given activities : 1. To purify sugar
2. To purify petroleum products

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

Word equation for k(s) +h2o(l) yield koh (aq) + h2

Why is the bottom layer of a trophic pyrimid the