Question

16. When a sample of hydrogen fluoride is
cooled to 303 K, most of the molecules
undergo dimerization. If the vapour
density of such a sample is 18, what per
cent of total molecules in the sample are
in dimer form? (F = 19)
(a) 88.89
(b) 80.0
(c) 20.0
(d) 11.11​

Answer 1

Answer:

Perfect questions for guys interested in maths..

2. The value of x + x(xx) when x = 2 is:

(a) 10, (b) 16, (c) 18, (d) 36, (e) 64

Solution:

x + x(xx)

Put the value of x = 2 in the above expression we get,

2 + 2(22)

= 2 + 2(2 × 2)

= 2 + 2(4)

= 2 + 8

= 10

Answer: (a)