the oldest fossils on earth are 3.5 billion years
Answer:
Net ionic equation:
Explanation:
Reaction between and is an example of double decomposition reaction where each cations and anions of each salt exchange their partners during reaction to form and NaCl
is an insoluble salt. Hence precipitation of has been observed.
Molecular equation:
Total ionic equation:
Here and are spectator ions. Therefore they are eliminated from both side of total ionic equation to get net ionic equation.
Net ionic equation:
Answer:
A: Synonyms
Explanation:
Synonyms are two words that have same meaning but are different words (tell me if this works!)