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The rate of diffusion of a gas Y is twice that of Z. If the relative molecular mass of Y is 64 and the two gases diffuse under the same conditions, find the relative molecular mass of Z.
32
4
8
16
From the diagram above, an ideal gas is represented by
M
N
K
L
What volume of carbon(II) oxide is produced by reacting excess carbon with 10 dm3 of oxygen?
5 dm3
20 dm3
15 dm3
10 dm3
The presence of an impurity in a substance will cause the melting point to
be zero
reduce
increase
be stable
The compound that is used as an anaesthetic is
CCl4
CH Cl3
CH2Cl2
CH3Cl
