YSTEM It is equal to 39.37 in. dinarily used by the sed is the cubic centi entimeter (cc.) 2 6 The chemist uses only the cubic centimeter and the liter as measures of volume. Thus, the volume of a test tube is given as (say) 25 cc.; that of a flask as (say) 500 cc. or 0.5 liter. 3. Weight. The unit is the gram. This is the one thousandth part of the weight of a piece of platinum preserved at Sèvres, France. It is equal to 15.43 grains. 10 milligrams (mg.) = 1 centigram (cg.) The gram is practically the only unit used by the chemist. Thus, the weight of a crucible is given as (say) 10.532 g. and not 10,532 mg. or 10 g. 5 dg. 3 cg. 2 mg. Note that 1 pound troy: 5760 grains = 373.24 grams = 1 pound avoirdupois = 1 U.S. quart = 0.95 liter Also note that 1 centimeter = 7000 grains = 453.59 grams nearly inch 1 kilogram = nearly 2 pounds (avoirdupois) N-CENTIMETER SCALE 7 8 6 10 11 12 13 14 15 The School Committee of the City of Boston 15 Beacon Street rus 3 2044 097 021 968 |