When ch3i molecules in the vapor state absorb 253.7 nm light they dissociate into methyl radicals and iodine atoms the energy required to rupture?

Which answer lists the fundamental forces in order from strongest to weakest

An exothermic reaction is conducted in an insulated calorimeter filled with water. the calorimeter is then sealed so that there is no heat exchanged between the contents of the container and the surrounding air. which of the following statements is true about the reaction?

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?