Concept explainers
(a)
Interpretation:
The balanced equation for the formation of
Concept Introduction:
Balanced equation:
In a chemical equation, the number of atoms or elements that present in both reactant and product sides are equal means this equation is known as balanced equation.
(b)
Interpretation:
Enthalpy change of a reaction of formation of Boron nitride has to be calculated.
Concept Introduction:
Hess's law:
Hess's law state that the different in enthalpy change of reactant to product is known as enthalpy change of a reaction.
The enthalpy change reactant to product is calculated by subtraction of standard enthalpy of formation (SEF) of reactant from SEF product.
(c)
Interpretation:
The amount of borax is needed to produce
Concept Introduction:
Percentage yield:
Percentage yield is given by,
Mole:
Mole of the solid substance is given by,
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