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style="color:rgb(51,51,51);">=(C1÷L1+C2÷L2)+. . .(Cn÷Ln)

using the formula above where E is the equivalent exposure, C is the concentration of a particular contaminant, and L is the exposure limit for the contaminant. what is equivalent exposure of the following metal fumes, copper, cadmium, nickel and chromium

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