An oxide XO2 has a vapour density o...
An oxide XO2 has a vapour density of 32. What is the atomic mass of X?
32
20
14
12
Correct answer is A
Relative molecular mass of XO2 =2 × vapour density
Relative molecular mass → 32 * 2 = 64
Atomic mass of X:
X + [16 * 2] = 64
X = 64 - 32
=32
Which of the following pollutants is biodegradable ? ...
H- + H2(I)O → H2(g) + OH-(aq). From the equation above, it can be inferred that the?...
Which of the following statements is correct? ...
The role of sodium chloride in the preparation of soap is to? ...
The volume occupied by 1.58g of a gas at S.T.P is 500cm\(^3\). What is the relative molecular m...
Diffusion is slowest in solid particles than in particles of liquid and gases because ...
2H2S(g) + SO2(g) + H2O(I) → 3S(s) + 3H2O(I)..........(i) 3CuO(s) + 2NH3(g) → 3Cu(s) + 3H2O(I) + ...