¿cual es el tlv de una mezcla de 400 ppm de acetona, 150 ppm de acetona de sec- btilo y 100 ppm de metil etilcetona? ¿se excede la unidad?

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.