calculate the average atomic mass of sulfur if 95% of all sulfur atoms have a mass of 31.972amu 0.76% has a mass of 32.971u and 4.22% have a mass of 33.967amu.

Given that the molar mass of nano3  is 85.00  g/mol, what mass of nano3  is needed to make 4.50  l of a 1.50  m nano3solution? use  .6.75 g18.9 g255 g574 g

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d.the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.