Is the concentration of cadmium below the critical limit

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Reference no: EM133254368

Question 1. The "critical limit" defines an acceptable maximum concentration of a metal below which long-term deleterious effects to an ecosystem should not occur. The critical limit of cadmium should be below 0.80 mg/m3. The following samples were takenfrom a river and evaluated for their concentration of cadmium. Is the concentration of cadmium below the critical limit?

Concentration (mg/m³)
0.88
0.99
0.72
0.85
0.71
0.75
0.78
0.9
0.77
0.91
0.96
0.86

Question 2. Three suppliers are being evaluated for their percent concentration of carbon in steel. The higher the concentration, the better the material for this application and the price of each supplier is listed at the bottom of the table. Which supplier should be chosen? Support your conclusion.

Percent Concentration of Mg
Supplier 1	Supplier 2	Supplier3
1.71	1.51	1.40
1.73	1.53	1.43
1.65	1.57	1.32
1.60	1.61	1.36
1.66	1.63	1.48
Cost ($ per ton)
506	482	468

Reference no: EM133254368

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