Determine the value for the following reaction. 2hi(g) + 2.4 kcal → h2(g) + l2(g) δh =

Explanation:

Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and for the reaction comes out to be positive.

The heat is shown on the reactant side.

Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and for the reaction comes out to be negative.

The heat is shown on the product side.

a polar bond is formed when electrons are shared unevenly between atoms

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b