The element rhenium has two naturally occurring isotopes, 185 re and 187 re, with an average atomic mass of 186.207 amu. rhenium is 62.60% 187 re, and the atomic mass of 187 re is 186.956 amu. calculate the mass of 185 re. how do you do this?

What is the number of atoms in 3.54 mol s

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

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.