1. Explain how different types of valve work and their applications (globe, diaphragm, pinch, gate, eccentric plud, butterfly and ball). 2. Explain how RTD and Infrared temperature sensors work? Advantage and disadvantages of each type? Their applications? 3. Explain how orifice and electromagnetic flowmeter work?

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

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explanation:

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the answer is na (sodium)