Achemist prepares a solution of mercury(ii) iodide hgi2 by measuring out 0.0067μmol of mercury(ii) iodide into a 350.ml volumetric flask and filling the flask to the mark with water. calculate the concentration in /μmoll of the chemist's mercury(ii) iodide solution. round your answer to 2 significant digits.

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Free answer. the treaty of versailles ended world war i, but some of the terms of the treaty contributed to the beginning of world war ii. which was one of the terms of the treaty? the answer would be "germany was forces to pay reparations to the allied countries.". i hope this .

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same