What is the solubility of pbi2 in 0.4 m ki given the solubility constant of pbi2 is 7.1 x 10-9?

The correct answer is 4.4 x 10^-8 M

Explanation:

7.1 x 10^-9 = x * (0.4M)^2

(7.1 x 10^-9)/.16 = x

4.4 x 10^-8 = x

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements