It's mean the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.
Net overall dissociation:
Na2CO3 ---> 2Na(-) + CO3(2-)
*The ion charge is in parenthesis
Vinegar pH 3.2: Weak acid
Battery acid pH 0.5: Strong acid
Shampoo pH 7.0: Neutral
Ammonia pH 11.1 Strong base
Answer:
lower mantle
Explanation:
because the core and the crust are solid.
The frequency of the sound waves travel faster and more effectively in liquids than in air and travel even more effectively in solids.
