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Okay i'm gonna throw it out there. These are the question i can't do. Some of them r probably really easy but my textbook has no explanation 1. The concentration of sodium hyroxide in waste water from an alumina refinery was found by titrating 20ml aliquots of waste water agaisint .15M...

1. Lawn fertiliser contains nitrogen. A 1.3g sample of lawn fertiliser was weighed and carefully transferred to a 250ml volumetric flask. The weighing bottle was washed with a little de-ionised water and added to the content, until it reached the calibration line. A 20ml aliquot of this...