8. What type of chemical reaction is the following reaction: hydrochloric adid + magnesium hydroxide – magnesium chloride + water

a) testing for carbon dioxide
b) fermentation
c) combustion
d) neutralisation

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

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