Answer:
D
Explanation:
B. They can contain different types of atoms and molecules.
A pure substance only has one type of particle that can either be atoms, molecules, elements, or compounds.
Potassium Bromide = KBr
Nitrogen dioxide = NO₂
Lithium oxide = Li₂O
Potassium Bromide (KBr)
C. NaCl
Explanation: The answer is C because the products are water and salt. Hydrochloric acid is a strong acid and NaOH ( sodium hydroxide is also a strong acid) are the reactants.
Answer: a