Combination of AH AH, and He needed (using Hess s law).
Reaction Equation
AH (kJ/mol)
Reaction | Mg(s) + 2HCl(aq)-MQCI (aq) . H.(g)
Reaction 2. MgO(S) 2HCl(aq)
MgCl(aq) . H.000
(trom row 9)
(from row 9)
-286 (published value)
Reaction 3. H:(9)
0_49) -
H. O(
Sagnes
combustionMg(s) + Vog) - MgO(s)

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.