2004 - JAMB Chemistry Past Questions and Answers - page 1
When a solid substance disappears completely as a gas on heating, the substance is said to have undergone
A chemical reaction is always associated with
If a solution contains 4.9g of tetraoxosulphate (VI) acid, calculate the amount of copper (II) oxide that will react with it
[Cu = 64, O = 16, S = 32, H = 1]
What volume of gas is evolved at S.t.p if 2g of calcium trioxocarbonate (IV) is added to a solution of hydrochloric acid?
[Ca = 40, C = 12, O = 16, Cl = 35.5, H = 1 Molar volume of agas at s.t.p = 22.4 dm3
According to charles' law, the volume of a gas becomes zero at
It is difficult to achieve an orderly arrangement of the molecules of a gas because they
A given volume of methane diffuses in 20s. How long will it take the same volume of sulphur (IV) oxide to diffuse under the same conditions?
[C = 12, H = 1, S = 32, O = 16
An electron can be added to a halogen atom to form a halide ion with
The shape of s-orbitals is
22688Ra → x86Rn + α - particle
What is the value of x in the nuclear reaction above?