An airplane specifically designed to fly at high altitudes may have:
O
A. a battery that provides additional power for the extra thrust
needed.
O
B. an extra engine to burn more fuel and create more thrust.
O
C. an added tank of oxygen to mix with the fuel for the combustion
reactions.
O
D. smaller wings to make it more aerodynamic.

the ratio of the conjugate base to the acid required to attain the desired ph.

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