Cork Institute of Technology
Bachelor of Engineering (Honours) in Mechanical Engineering – Stage 1
(Bachelor of Engineering in Mechanical Engineering – Stage 1)
(NFQ – Level 8)
Autumn 2005
Chemistry
(Time: 3 Hours)
Instructions
Answer any FIVE questions.
All questions carry equal marks.
Examiners: Mr. S. P. McCarthy
Prof. J. Monaghan
Mr. J. E. Hegarty
Q1. (a) Complete the following nuclear equations:
(i) Al
27
13 + n
1
0 → Na
24
11 + ……………
(ii) N
14
7 + He
4
2 → O
17
8 +..…………...
(iii) Al
27
13 + n
1
0 → Mg
27
12 + …………….
(6 marks)
(b) Calculate the energy change per gram of reactant for the following nuclear fusion
reaction:
H
2
1 + H
2
1 = He
4
2
Useful data:
Velocity of light = 3 x 108 ms-1
Avagadros Number = 6.02 x 1023
Atomic mass of 4
2He = 4.0026 a.m.u.
Atomic mass of 2
1H = 2.0141 a.m.u. (14 marks)
Q2. Write notes on the following:
