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The equivalent weight of an element is the mass which combines with or displaces 1.008 gram of hydrogen or 8.0 grams of oxygen or 35.5 grams of chlorine. The equivalent weight of an element is the mass of a mole of the element divided by the element's usual valence. That is, in grams, the atomic weight of the element divided by the usual ...
The tonne (t) is an SI-compatible unit of mass equal to a megagram ( Mg ), or 10 3 kg. The unit is in common use for masses above about 10 3 kg and is often used with SI prefixes. For example, a gigagram ( Gg) or 10 9 g is 10 3 tonnes, commonly called a kilotonne .
Gram atomic mass is another term for the mass, in grams, of one mole of atoms of that element. "Gram atom" is a former term for a mole. "Gram atom" is a former term for a mole. Molecular weight (M.W.) is an older term for what is now more correctly called the relative molar mass ( M r ). [ 7 ]
Dram (unit) The dram (alternative British spelling drachm; apothecary symbol ʒ or ℨ; [ a] abbreviated dr) [ 4][ 5]: C-6–C-7 [ 6] is a unit of mass in the avoirdupois system, and both a unit of mass and a unit of volume in the apothecaries' system. [ 5] It was originally both a coin and a weight in ancient Greece. [ 7]
12 māshās = 1 tolā (= 10.886227 gram) 80 tola s = 1 ser (= 870.89816 gram) 40 sers = 1 maund (= 34 kg 8 hg 3 dag 5g 9 dg 2.6 cg /34.835926 kilograms) 1 rattī = 1.75 grains (= 0.11339825 gram/113 milligrams 398 1/4 micrograms 4 attograms ) (1 grain = 0.064799 gram) From 1833 the rupee and tolā weight was fixed at 180 grains, i.e. 11.66382 ...
It was originally defined as "the quantity or mass of radium emanation in equilibrium with one gram of radium (element)", [1] but is currently defined as 1 Ci = 3.7 × 10 10 decays per second [4] after more accurate measurements of the activity of 226 Ra (which has a specific activity of 3.66 × 10 10 Bq/g [5]).
The rad is a unit of absorbed radiation dose, defined as 1 rad = 0.01 Gy = 0.01 J/kg. [ 1] It was originally defined in CGS units in 1953 as the dose causing 100 ergs of energy to be absorbed by one gram of matter. The material absorbing the radiation can be human tissue, air, water, or any other substance.
The poise is often used with the metric prefix centi-because the viscosity of water at 20 °C (standard conditions for temperature and pressure) is almost exactly 1 centipoise. [3] A centipoise is one hundredth of a poise, or one millipascal-second (mPa⋅s) in SI units (1 cP = 10 −3 Pa⋅s = 1 mPa⋅s). [4] The CGS symbol for the centipoise ...