The density of a mixture of fluorine and chlorine gases is 1.77 g/L at 14C and 0.893 atm. Calculate the mass percent of the gases.
Chemistry Skills and Reasoning 1 Week Seven Notes Chapter Eight: Chemical Composition - Objects do not need to have identical masses to be counted by weighing, all we need to know is the average mass of the objects - To count the atoms in a sample of a given element by weighing we must know the mass of the sample and the average mass for that element - Atoms have very tiny masses so scientists created a unit to avoid using very small numbers - The average atomic mass for an element is the weighted average of the masses of all the isotopes of an element - Average Atomic Mass for Carbon: even though natural carbon does not contain a single atom with mass 12.01, for our purposes, we can treat carbon as
