When nh3(g) reacts with n2o(g) to form n2(g) and h2o(g), 105 kcal of energy are evolved for each mole of nh3(g) that reacts. write a balanced equation for the reaction with an energy term in kcal as part of the equation.

Answer : The balanced chemical equation is,

Explanation :

Balanced chemical equation : It is defined as the number of atoms of individual elements present on the reactant side must be equal to the number of atoms of individual elements present on product side.

The given unbalanced chemical reaction is,

This chemical reaction is an unbalanced reaction because in this reaction, the number of atoms of individual elements are not balanced.

In order to balanced the chemical reaction, the coefficient 2 is put before the , the coefficient 3 is put before the and the coefficient 4 is put before the .

The energy evolved in this reaction =

Thus, the balanced chemical reaction will be,

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."