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10 Nov 2019

The following data were obtained in a preliminary determinationof the amount of inorganic ash in a breakfast cereal.

a. Determine Ks and the amount of sample needed to give arelative standard deviation for sampling of

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Sixta Kovacek
Sixta KovacekLv2
19 May 2019

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Related questions

8. An air particulate sample from a smelter facility is analyzed for cadmium by the following method. Air is drawn through a glass fiber filter. The filter is digested in strong acid and the resulting solution is diluted to a final volume of 100 ml. The sample is run on an AA spectrometer for cadmium. Data obtained are as of follows:

Sampler flow: 24 ft3/h

Time of sampling: 8.0 h

Concentration of standard: 2.0 ppm

Absorbance reading for standard: 0.234

Absorbance reading for sample: 0.321

What is the concentration of cadmium in the air in ug/m3?

Asap please

2.13

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