The names and chemical formulae of some chemical compounds are written in the first two columns of the table below. each compound is soluble in water.
imagine that a few tenths of a mole of each compound is dissolved in a liter of water. then, write down in the third column of the table the chemical formula of the major chemical species that will be present in this solution. for example, you know water itself will be present, so you can begin each list with the chemical formula for water
note: "major" chemical species are those present in concentrations greater than .
compound formula major species present when dissolved in water
fructose c6h12o6 ¬
potassium cyanide kcn
iron (ii) bromide febr2

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).