naturally occurring iodine has an atomic mass of 126.9045. a 12.3849-g sample of iodine is accidentally contaminated with 1.00070 g of 129i, a synthetic radioisotope of iodine used in the treatment of certain diseases of the thyroid gland. the mass of 129i is 128.9050 amu.

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?