__Gaussian distribution curve applies to an ideal situation that systematic errors exist. __An ethical analytical chemist understands that random errors always arise, propagate, and are unavoidable. __ UH Fall 2021 has 15208 enrollments. Value 15208 has 5 significant figures.
T ( true) or F ( false ).
- __Gaussian distribution curve applies to an ideal situation that systematic errors exist.
- __An ethical analytical chemist understands that random errors always arise, propagate, and are unavoidable.
- __ UH Fall 2021 has 15208 enrollments. Value 15208 has 5 significant figures.
- __When phosphoric acid solution is fully neutralized by potassium hydroxide solution, then we have:
3MKOH VKOH = MH3PO4 VH3PO4
5 __ As far as the sugar concentration is concerned, the “ Dilution formula ” can be applied to a cup of sugar aqueous
solution, regardless of adding more water or olive oil to dilute or evaporating water to preconcentrate.
- __ Concentration unit “ppm” can not be used in the“ Dilution formula ”.
7.___ Less decimal places mean more determination errors.
8.___If unlimited measurements are carried out, then 68.3% of the measured values lie within 1 · SD on either side
of the “true” value (in the interval µ ± s), even if the measurements are full of random errors.
- __ “Analyte” is another name for “unknown” in Quant Analysis.
10.__ For an established reaction equilibrium: 2CrO4 2- ( yellow ) + 2H+ < = > Cr2O7 2- ( orange ) + H2O Blowing
carbon dioxide into the system will result in more orange color.
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