Butane, C 4 H 10 , burns with the oxygen in air to give carbon dioxide and water. 2C 4 H 10 (g) + 13O 2 (g) 8CO 2 (g) + 10H 2 O(g) What is the amount (in moles) of carbon dioxide produced from 0.30 mole C 4 H 10 ?

if you mean hydrogen and oxygen then water is the product

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