Fictitious element Fx has two common isotopes. If one of the isotopes has an atomic mass of 358.5 amu and an abundance of 36.90% and its other isotope has a mass of 360.7 amu, what is the average atomic mass of Fx (in amu)? Report the answer to 4 significant figures.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8