Hardness of water is caused by the presence of ions of
Hardness of water is caused by the presence of ions of
magnesium and silver
cacium and magnesium
sodium and potassium
calcium and sodium
Correct answer is B
No explanation has been provided for this answer.
RS(aq) + HF(aq) → RF(s) + HS(aq) ΔH = -65.7 kj mol(-1). From the equation above, it can be de...
In the reaction C + 2HNO3 → CO2 + NO2 + NO + H2O nitric acid is acting as?...
What is the trend for ionization energy across a period in the periodic table? ...
A radioactive solid is best stored ...
Which of the following reaction is endothermic? ...
Which of the following happens during the electrolysis of molten sodium chloride? ...
What process does the following equation represent ? n(C6H10O5) + nH2O &...
The type of iron that is best suited for welding, making nails, chains and iron rods is? ...