Which of the following statements is correct?
a.
red litmus paper turns blue when placed in a base.
b.
red litmus paper stays red when placed in a base.
c.
blue litmus paper stays blue when placed in an acid.
d.
blue litmus paper turns red when placed in a base.

(1.6 × 10-19)(5.0 × 106) = c × 10d identify the missing numbers below to show the result of multiplying the numbers.

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.

8. what happens to matter during a chemical reaction