Borax for pool calculator
[DOC File]Quia
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Now you need a calculator: simply find the antilog (which is the same as 10x) of -9.25. The antilog of -9.25 gives 5.6 x 10-10 M for the [H+]. Notice one more thing: just as the [H+] and [OH-] must always multiply out to 1.0 x 10-14, since the pH and pOH are their …
[DOC File]Soil and Soil Productivity
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However, with time nutrients were continually depleted from the organic matter pool thus requiring fertilizers additions in later years. The demand for fertilizers was essentially a function of need. Continuous cultivation of these soils lowered soil organic matter levels from 4% (grass first turned over) to their present level of about 1%.
[DOCX File]Goal:
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Students make Gluey Putty by mixing solutions of 50% water/glue and 4% borax and then perform a number of tests to determine its ... Students observe that the calculator has solar cells and when they are covered up, ... The pool kit is also used to test the pH of these samples. Embedded Inquiry for all grades. Embedded Inquiry for all grades ...
[DOC File]Home | Chemistry
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2. Add an amount of saturated borax solution equal to about 1/2 the volume of the glue and water mixture. Stir well. The borax acts as a crosslinking agent in this mixture by forming labile bonds between polymer chains. 3. Remove the sticky glob of polymer and work it into a ball with your hands. The stickiness disappears after a few minutes.
[DOCX File]Collection of useful Resources for HSC Students | AceHSC
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Pool chlorine or hydrochloric acid is added to achieve a suitable pH. ... Use log 10 (log base ten) on the calculator, NOT the natural logarithm (log e or ln) ... Borax (Na 2 B 4 O 7.10H 2 O) Other common acids/bases are unsuitable, as they don’t fit the above criteria. HCl is efflorescent.
[DOCX File]Goal: - Vanderbilt University
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Students make Gluey Putty by mixing solutions of 50% water/glue and 4% borax and then perform a number of tests to determine its properties. ... the calculator doesn’t work. ... (ppm) is introduced by using successive dilutions of a red food dye solution. A pool kit is used to test chlorine standards and water samples from drinking fountains ...
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