2. Barium compounds are chemically very similar to strontium compounds. Water-soluble compounds of both are toxic, but to different degrees. An antidote for barium chloride
poisoning is to orally administer 30 grams of sodium sulfate in 250 mL of water. Explain the
chemical basis for this antidote.

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

Air can be considered a mixture. which statement does not explain why?