Gallium Selenide is the non chemical name for Ga2Se3
Answer: The solubility of this compound in pure water is 0.012 M
Explanation:
Solubility product is defined as the equilibrium constant in which a solid ionic compound is dissolved to produce its ions in solution. It is represented as 
The equation for the ionization of the is given as:
By stoichiometry of the reaction:
1 mole of 
gives 1 mole of 
and 2 mole of 
When the solubility of is S moles/liter, then the solubility of will be S moles\liter and solubility of will be 2S moles/liter.
![K_{sp}=[Ca^{2+}][OH^{-}]^2](https://tex.z-dn.net/?f=K_%7Bsp%7D%3D%5BCa%5E%7B2%2B%7D%5D%5BOH%5E%7B-%7D%5D%5E2)
![6.5\times 10^{-6}=[S][2S]^2](https://tex.z-dn.net/?f=6.5%5Ctimes%2010%5E%7B-6%7D%3D%5BS%5D%5B2S%5D%5E2)
Thus solubility of this compound in pure water is 0.012 M
Answer:
B) The shape of the molecule is determined by the valence electrons of the different atoms within a molecule repelling each other, so the atoms are as far apart as possible from any other valence shell.
Explanation:
VSEPR denotes Valence Electron Pair Repulsion.
It is one of the theories used to predict the model of a compound or molecule.
- An atom bonded by two or more other kinds of atoms as in many covalent molecules and ions have their geometry determined by the bonds around the central atom.
- The VESPR theory determines the total number of electron pairs surrounding the central atom of a specie.
- The electron pairs orients in such a way as to minimize the electrostatic repulsion between them.
The answer is c , it cant change a speed or a motion if it doesnt have a net force acting on it
