Calculate the standared enthalpy of formation of solid Mg(OH)2 given the following data: 2Mg(s) + O29(g) →2MgO(s) ∆H = -1203.6kJ
Mg(OH)2(s) →MgO(s) + H2O(l) ∆H= +37.1kJ
2H2(g) +O2(g) →2H2O(l) ∆H = -571.7kJ

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying