Here's a website with the answer and some cool reading:
http://history-world.org/archeology.htm
Answer:
Na2Co3 (aq) + CaCl2 (aq) ---> CaCO3 (s) + 2NaCl (aq)
Answer:
b because no death and no emigration
Explanation:
Answer: In CaF2, the oxidation number of Ca is +2,& that of F is -1.
Answer:
Calcium carbonate +Sulphuric Acid - -> Calcium sulphate + water + Carbon dioxide
Explanation:
Chemical eq:
(sorry it's sideways)
Basically make sure you have an equal amount of each element on both sides of the arrow