Which statement is correct about the reaction that occurs between calcium chloride and sodium carbonate? it is a single replacement reaction because two new compounds of calcium and sodium are formed. it is a double replacement reaction because calcium chloride and sodium carbonate exchange their non-metallic parts. it is a single replacement reaction because calcium replaces sodium within a compound as sodium is higher than calcium in the activity series. it is a double replacement reaction because the ions of calcium and sodium exchange places in an aqueous solution as calcium is higher than sodium in the activity series.

The correct answer is that it is a double replacement reaction because calcium chloride and sodium carbonate exchange their non-metallic parts.

Explanation:

A is more reactive than B.

For the chemical reaction of sodium carbonate and calcium chloride:

In this type of reaction, the exchange of non-metallic parts that is the anions takes place because chloride ion forms more stable compound with sodium rather than calcium.

Hence, it is a type of double displacement reaction because there is an exchange of non-metallic parts.

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.