Chemistry, 13.12.2019 17:31 sharonkrobinson
Consider the laboratory on hplc analysis of components in diet soft drinks. your standard solutions for caffeine were prepared from a stock solution of 0.40 mg/ml caffeine, from which you drew, 1.0, 2.0, 3.0, 4.0 and 5.0 ml and diluted each one to 50.0 ml. calculate the concentration of the most concentrated standard solution. for the same lab as in problem 1, suppose you plotted peak height (y-axis) vs. concentration in mg/ml (x-axis), and the slope was found to be 25.0 ml/mg. if the peak height for the unknown was 15.5, calculate the concentration in the unknown. assume the intercept was zero.
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Chemistry, 22.06.2019 21:00
Once similarity and one difference between a mixture of elements and a mixture of compounds
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What is the chemical formula for the compound formed between sodium and flour one
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In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above
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Chemistry, 23.06.2019 01:50
Drag the tiles to the correct locations. each tile can be used more than once, but not all tiles will be used. one or more locations will remain empty. nitrosyl fluoride has the chemical formula nof nitrogen has five valence electrons, oxygen has six, and fluorine has seven. complete the lewis structure for this covalent compound. f n = = = . : : 0 : reset next um. all rights reserved us 2
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Consider the laboratory on hplc analysis of components in diet soft drinks. your standard solutions...
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