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The amount of water a substance chemically combined with is called water of
An example of a compound that is acidic in solution is
Biodegradable pollutants are not safe in water systems because they can cause
An example of highly unsaturated hydrocarbon is
Scandium is not regarded as a transition metal because its ion has
If a stable neutral atom has a mass number of 31, the number of electrons and neutrons respectively are
H\(_2\)S\(_{(g)}\) + Cl\(_2\)\(_{(g)}\) → 2HCl\(_{(g)}\) + S\(_{(s)}\)
What is the change in oxidation state of sulphur from reactant to product?
The product formed when ethyne is passed through a hot tube containing finely divided iron is
An example of a physical change is
25.0g of potassium chloride were dissolved in 80g of distilled water at 30\(^0\)C. Calculate the solubility of the solute in mol dm\(^3\). [K =39, Cl = 35.5]
The stability of atomic nucleus is determined by ratio of
The law which states that a pure chemical compound, no matter how it is made, will be made up of the same elements contained in the same proportion by mass is
The percentage of hydrogen in the sixth member of the class of the aliphatic alkanes is [H =1, C =12 ]
The compound of Copper used as a fungicide is
If a salt weighs 2g and upon exposure to the atmosphere weighs 1.5g, this is as a result of
The volume occupied by 1 mole of an ideal gas at a temperature of 13\(^0\)C and a pressure of 1.58 atm is
[ R = 0.082 atm dm\(^3\) K\(^{-1}\)mol\(^{-1}\) ]
Calculate the number of moles of Copper that will be deposited, if 2 Faraday of electricity is passed through the copper during the electrolysis of copper(II)tetraoxosulphate(VI)
[1F = 96500C ]
Which of the following is used in forming slag in the blast furnace for the extraction of iron?
The basicity of tetraoxophosphate(V) acid is
A type of isomerism that ClCH=CHCl can exhibit is