You have an atom with 3 protons ,4 neutrons ,and 3 electrons .adding a neutron will

Convert into an atom of lithium-8.  

Explanation:

Your nucleus has three protons and four neutrons, so you have an atom of lithium-7.

If you add a neutron, you are creating an isotope of lithium with one more unit of mass.

That is, you are forming an atom of lithium-8.

answer: mole of the gas

answer: mole of the gasexplanation:

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l