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# General Chemistry Calculations

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Hello,

I need assistance with the following question, would appreciate it if someone can help me.

I have defined both terms, so i just require assistance with the calculation.

Thank you

Question:

1. The TLV for carbon monoxide is 35ppm. Define the terms TLV and ppm and calculate them for the following example:

A mechanic in an automotive repair shop is exposed to the following carbon monoxide levels over an 8 hour shift.
2 hours @ 34 ppm
5 hours @ 40 ppm
1 hour @ 20 ppm

Is the worker over-exposed during the duration of the work-shift?

What is the Primary concept of hazard recognition and the hierarchy of hazard control?

Going through this list, explain how they might be applied to this example to provide potential solutions.

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#### Solution Preview

1. The TLV for carbon monoxide is 35ppm. Define the terms TLV and ppm and calculate them for the following example:

A mechanic in an automotive repair shop is exposed to the following carbon monoxide levels over an 8 hour shift.
2 hours @ 34 ppm
5 hours @ 40 ppm
1 hour @ 20 ppm

Is the worker over-exposed during the duration of the work-shift?

TLV ...

#### Solution Summary

This solution provides assistance with the general chemistry calculations.

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