Which calculation would require a mole ratio as a conversion factor?
quick answer would be appreciated! test is timed
moles of reactant to moles of product
grams of reactant to moles of product
grams of reactant to grams of a different reactant
all of the above

all of the above

Explanation:

The question refers to stoichiometry of a balanced chemical reaction. When a chemical reaction is balanced, the mole ratio of reactants and product are of utmost importance in making any kind of calculation involving the reaction.

We could determine;

I) the mass of another reactant

II) the mass/ number of moles of product by just taking the mole ratio of the species involved.

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).