Lodine has three isotopes; lodine with a mass of 127 amu and an abundance of 80%, lodine with a mass of 128 amu and an
abundance of 3%. The last isotope has a mass of 126 amu with an
abundance of 17%. What is the average atomic mass of lodine?

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide

Convert .347 kilometers to miles show your work

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.