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The difference between hard and soft water
Collect some hard water from a stream(or make some as defined in the next experiment). Also secure some soft water like as rain water or distilled water. Make some soap solution by dissolving soap shavings or powdered soap in a little warm water. Place equivalent amounts of hard and soft water in every of two bottles. Add soap solution to the soft water with a dropper, some drops at a time. Shake the bottle well after every addition. Count the number of drops of soap solution required to produce suds about 1 cm thick on the top.
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Environment and Waste Minimisation Your first assessment will cover the design of a monolith reactor for the VOCs removal. Therefore, you are asked to do the following:
Define the Sympathetic Nervous System The sympathetic component of the autonomic nervous system is concerned with in- creasing the level of arousal and energy expenditure - pri
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