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Which of the following represents an aromatic compound?
A mixture of petrol and water can be separated through
A metal X forms two bromides with the formulae XBr2 and XBr3. What type of bonding exists between X and bromine in the bromide?
The elements that belong to the third period of the periodic table are?
Which of the following decrease when a given mass of gas is compressed to half its initial volume?
If the electron configuration of an element is 1S\(^2\) 2S\(^2\)2P\(^5\), how many unpaired electron are there?
How many electrons are in the L shell of \(^{31}_{15}\)P?
What is the volume of oxygen required to burn complete 45 cm\(^3\) of methane at s.t.p?
Which experiment led to the measurement of the charge on an electron?
MnO\(_2\)(s) + xHCl(aq) → MnCl\(_2\)(aq) + yH\(_2\)O(l) + zCl\(_2\)(g)
In the equation above, what are the values of x, y and z respectively
Dissolving some pellets of NaOH in water would result in
The salt formed from strong acid and a strong base is?
Tartaric acid is used industrially to
How long would it take to deposit 0.08g of copper from CuCl\(_2\) solution by passing a current of 0.5A?
[Cu = 64, 1F = 96500 C mol-1]
C\(_2\)H\(_4\)(g) + H\(_2\)(g) → C\(_2\)H\(_6\)(g) ΔH = -137kJ mol-1
The reaction represented above is
What happens when zinc rod is immersed in copper (II) tetraoxosulphate (VI) solution?
The reaction that takes place in Daniell's cell is