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QUESTION 1
(a) Describe the main purpose of the Globally Harmonised System of Classification and Labelling of Chemicals
(b) Outline the bridging principles for classification of mixtures
(c) Briefly describe the different types of studies and tests available for categorizing chemicals
QUESTION 2
(a) Briefly describe the main factors that affect diffusion across cell membranes
(b) What are the main activities relevant to the local context where occupational exposure to metals is possible?
(c) Describe the main modes of toxicity associated with metals. Illustrate your answer with relevant examples
QUESTION 3
(a) Describe the main elements of a Chemical Risk Assessment
(b) Explain the following terms that are usually encountered in an MSDS
(c) Outline the applications of a dose response curve in industrial toxicology
Why a substance is being heated at a fast rate the temperature of decomposition
Implications of the future of fabrication for international trade, transportation, and logistics
Use Laplace transformation to solve the initial value problem
Determine the d-spacing (Å), to 3 decimal places
Draw T-S diagram of the cycle.
Calculate the molar fraction of the system in the vapor phase
Evaluate particle diameter at different terminal gas velocities
Application of reverse osmosis principles for the desalination of sea water
Assist with the setting of design variables necessary for sizing equipment
The atmospheric pressure of 100k Pa acts on the other side of the piston. The gas is heated until the volume is doubled and the final pressure is 500 kPa. Calculate the work done by the gas.
The potential energy between two atoms A and B are constants and r the interatomic separation distance.
The effect of a hazardous substance depends on the concentration of the substance that is present in the body's systems. The concentration depends on the stages of toxicokinetics What are the four main stages of toxicokinetics
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