Part A What is the balanced chemical equation for the reacti
Part A
What is the balanced chemical equation for the reaction used to calculate Hf of MgCO3(s)?
If fractional coefficients are required, enter them as a fraction (i.e. 1/3). Indicate the physical states using the abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively without indicating allotropes. Use (aq) for aqueous solution.
| The standard enthalpy of  formation (Hf) is the enthalpy change that occurs  when exactly 1 mol of a compound is formed from its constituent  elements under standard conditions. The standard conditions are 1  atm pressure, a temperature of 25 C , and all the species present  at a concentration of 1 M . A \"standard enthalpies of  formation table\" containing Hf values might look  something like this: 
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Solution
part A)
answer :
Mg(s) + C(s) + 3/2 O2 (g) ----------------> MgCO3 (s)
reason : this euqation is based on definition of standard enthalpy of formation . the definition is given above . that is \" The standard enthalpy of formation (Hf) is the enthalpy change that occurs when exactly 1 mol of a compound is formed from its constituent elements under standard conditions\"

