each protein molecule connects to more protein molecules to form a silk strand which type of protein molecule do you think will form the most flexible strand

Phosgene is a chemical agent that is formed by decomposition of chlorinated hydrocarbon solvents by ultraviolet radiation. a. false b. true

Why did the federal government end its support of yucca mountain as a site for long-term storage of nuclear water

Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?