What is the final temperature of the solution formed when 1.05 g of NH, is added to 18.5 g of water at 24.7 °C in a calorimeter?
NH4Cl (s) → NH4+ (aq) + CH(aq) AH = 14.5 kJ/mol

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

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