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Determine the empirical formula of an oxide of sulphur containing 60% of oxygen
[S = 32, O = 16 ]
Fog is a colloid in which
The volume in cm\(^3\) of a 0.12 moldm\(^{-3}\) HCl required to completely neutralize a 20cm\(^3\) of 0.20 moldm\(^{-3}\) of NaOH is
Which of the following is an air pollutant?
Calculate the mass of Magnesium that will be liberated from its salt by the same quantity of electricity that liberated 16.0 g of Silver.
[Mg = 24.0, Ag = 108 ]
\(^{238}_{92}\)U + \(^1_0\)n → \(^{239}_{92}\)U
The process above produces
The shape of the molecule of Carbon(IV) oxide is
The salt formed when strong acid reacts with strong base is
When n = 3, the quantum number of an element is
A gas that turns lime water milky is likely to be from
Rust on the surface of a metal sheet contains
The element which can combine with oxygen to form an acid anhydride of the form XO\(_2\) is
In contact process, the catalyst used in the conversion of sulphur(IV)oxide to sulphur(VI) oxide is
A factor that does not affect the rate of a chemical reaction is
Concentrated sodium chloride solution is electrolyzed using mercury cathode and graphite anode. The products at the anode and the cathode respectively are
What is formed when metal reacts with acid to liberate gas?
The IUPAC nomenclature of the compound above is
Aqueous solution of sodium hydroxide can be used to test for the presence of : I. Ca\(^{2+}\) , II. Zn\(^{2+}\) , III. Cu\(^{2+}\)
The composition of alloy permalloy is iron and
CH\(_3\)-CH\(_2\)-OH and CH\(_3\)-O-CH\(_3\)
The relationship between the two compounds above, is that they are