<u>Answer:</u> The chemical equation for the given reaction is given below.
<u>Explanation:</u>
When solid calcium oxide reacts with sulfur trioxide gas to produce solid calcium sulfate, the chemical equation follows:

This is the reaction when a metal oxide reacts with non-metal oxide to produce a salt.
By Stoichiometry of the reaction:
1 mole of solid calcium oxide reacts with 1 mole of sulfur trioxide gas to produce 1 mole of solid calcium sulfate.
It would be letter "B", positive. Anions are the ones with negative charges.
Balanced Equation is
4H2SiCl2+4H2O → H8Si4O4 + 8HCl
Answer:
European Union was on grand committee
Answer:A
Explanation:
The melting points of solids depend in the relative sizes of ions in the ionic lattice. The smaller the relative sizes of the ions, the higher the lattice energy and the stronger the lattice hence higher melting point. Comparing relative ionic sizes, fluoride ion is lesser in size than chloride ion hence NaF has a higher melting point than NaCl.