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  1. uberturtle

    pH value

    In an experiment to determine the concentration of a sodium hydroxie solution, a student found that 250ml of 0.2M ethanoic acid exactly reacted wih 10ml of the sodium hydroxide solution. a)find the concentration of the sodium hydroxide solution. b)Explain the pH of the solution at the...
  2. uberturtle

    homg.

    A gauge to monitor the thickness of cardboard as it is produced in a paper mill consists of a source of beta particles and a detector. The detector registers changes in the intensity of radiation passing through the cardboard. Describe advantages of this type of gauge compared with a mechanical...
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