Question

Write the name of the chemical missing in this equation

calcium carbonate + hydrochloric acid --> calcium chloride + water +............

A)hydrogen
B)oxygen
C)nitrogen
D)carbon dioxide

Answer 1

D

Step-by-step explanation:

the calcium reacts with the chloride in the hydrochloric making calcium chloride.

the hydro in hydrochloric becomes water leaving us with carbonate which turns into carbon dioxide.

(in simple terms)