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A form of carbon used for absorbing poisonous gases and purification of noble gases is
The refreshing and characteristic taste of soda water and other soft drinks is as a result of the presence in them of
A gas that is not associated with global warming is
The substance often used for vulcanization of rubber is
A phenomenon where an element exist in different forms in the same physical state is known as
For a reaction in equilibrium, the species involved in the equilibrium constant expression are
N2(g) + O2(g) ↔ 2NO(g); ΔH = + 180.6 kJ mol-1
In the reaction above, increase in temperature will
Powdered marble reacts faster with hydrochloric acid solution than the granular form because the powdered form has
0.46g of ethanol when burned raised the temperature of 50g of water by 14.3K. Calculate the heat of combustion of ethanol.
[C = 12, O = 16, H = 1, Specific heat capacity of water = 4.2 jg-1K-1]
Given that M is the mass of substance deposited in an electrolysis and Q the quantity of electricity consumed, then Faraday's law can be written as
\(\frac{1}{2}\)Zn\(^{2+}\)(aq) + e\(^-\) → \(\frac{1}{2}\) Zn(s)
In the reaction above, calculate the quantity of electricity required to discharge zinc.
[F = 96 500 C mol\(^{-1}\)]
MnO\(_{4(aq)}^{-1}\) + 8H\(^+ _{(aq)}\) + Y → Mn\(^{2+} _{(aq)}\) + 4H\(_2\)O\(_{(l)}\)
Y in the equation above represents
The pOH of a solution of 0.25 mol dm\(^{-3}\) of hydrochloric acid is
In which order are the following salts sensitive to light?
HCl(aq) + H\(_2\)O(l) → H\(_3\)O+(aq) + Cl\(^-\)(aq)
In the reaction above, Cl\(^-\)(aq) is the
Hydration of ions in solution is associated with
1.0 dm3 of distilled water was used to wash 2.0g of a precipitate of AgCl. If the solubility product of AgCl is 2.0 x 10\({^-10}\)moldm-6, what quantity of silver was lost in the process?
The air pollutant unknown in nature is
Water molecule can be ligands especially when they are bonded to
A side effect of soft water is that