Someone plsss help me I will make you as brain plsss Chemical like polybrominated diphenyl ethers (PBDE) are present in the water in the Great Lakes. These chemicals are toxic when absorbed by the body. Which human health effect can result from the PBDEs in the Great Lakes?

May someone me with these science questions

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.

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?