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)

The diagin dilutepage 6 of 12a6a5(a)fluorine, chlorine, bromine and iodine are placed in the same group of theperiodic table.state the common name used to describe elements in this group.(i)state the group in which the elements are placed and explain whythey are placed in that group.(ii)which of the above named elements is a solid at roomtemperature and pressure?