Chemistry, 02.07.2019 19:10 kalebboatman
The european union has adopted a chemicals law, known as reach, that takes a very different approach. companies manufacturing or importing chemicals into the eu in quantities greater than one ton must register them with a specialized agency. companies bear the burden of identifying and managing the risks posed by their substances. chemicals of high concern (such as carcinogens, toxins, and bioaccumulative compounds) require specific authorization, and companies must demonstrate to the agency how the substances can be safely used, communicate this information to users, and make efforts to find safer substitutes. the agency can ban substances if the risks are deemed unmanageable. how would you compare this approach to the statutes discussed in chapter 8? should the us develop something similar to regulate toxic substances?
Answers: 2
Chemistry, 22.06.2019 14:00
The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
Answers: 3
Chemistry, 22.06.2019 16:30
At 20°c, a sample of h2o liquid and a sample of co2 gas each have the same average kinetic energy. why is one a liquid and the other a gas at this temperature?
Answers: 1
Chemistry, 22.06.2019 21:30
In one or two grammatically correct sentences, write a definition for the term molecule geometry
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Chemistry, 23.06.2019 00:30
How many moles of co2 are produced during the complete combustion of 3.6 moles of c2h6
Answers: 1
The european union has adopted a chemicals law, known as reach, that takes a very different approach...
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