Hard water is water with high concentrations of dissolved...
Hard water is water with high concentrations of dissolved ions, in particular calcium and
magnesium ions
nitrogen ions
phosporus ions
helium ions
Correct answer is A
Hard water is water with high concentrations of dissolved ions, in particular calcium and magnesium ions
The oxidation state of sulphur on H2SO4 acid is ...
The boiling point of pentane is higher than that of propane because? ...
Which of the following will change when a catalyst is added to a chemical reaction? ...
Which of the following molecules has a triple bond in its structure? ...
The compounds made up of only carbon and hydrogen are called? ...