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When working with aqueous solutions, it is common to assume that the density of water is 1.00 g/mL. Therefore, it is common to equate 1 kilogram of water with 1 L of water. Consequently, 1 ppm corresponds to 1 mg/L and 1 ppb corresponds to 1 μg/L.
For example, the following expression might be used for unit Ml (megalitre): v < 28.316846592 ! e3 ! e6 ! cuft If the condition is true, the result is e3cuft ; otherwise, it is e6cuft .
Normality is defined as the number of gram or mole equivalents of solute present in one liter of solution.The SI unit of normality is equivalents per liter (Eq/L). = where N is normality, m sol is the mass of solute in grams, EW sol is the equivalent weight of solute, and V soln is the volume of the entire solution in liters.
The standard unit of specific volume is cubic meters per kilogram (m 3 /kg), but other units include ft 3 /lb, ft 3 /slug, or mL/g. [ 1 ] Specific volume for an ideal gas is related to the molar gas constant ( R ) and the gas's temperature ( T ), pressure ( P ), and molar mass ( M ):
= 205.196 548 3 mg carat (metric) ct ≡ 200 mg = 200 mg clove: ≡ 8 lb av = 3.628 738 96 kg: crith: ≡ mass of 1 L of hydrogen gas at STP: ≈ 89.9349 mg dalton: Da 1/12 the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest: ≈ 1.660 539 068 92 (52) × 10 −27 kg [20] dram (apothecary ...
A teaspoon (5 ml) of neutron star material (5000 million tonnes) [117] 10 13: 1 × 10 13 kg Mass of comet 67P/Churyumov–Gerasimenko [118] 4 × 10 13 kg Global annual human carbon dioxide emission [119] [120] 10 14: 1.05 × 10 14 kg Global net primary production – the total mass of carbon fixed in organic compounds by photosynthesis each ...
0.9 mg/L 0,2 mg/L no limit listed 0.03 mg/L Antimony Sb 0.02 mg/L 5.0 μg/L 6.0 μg/L " 6.00 μg/L Arsenic As 0.01 mg/L 10 μg/L 10 μg/L 50 μg/L 10.0 μg/L 0.05 mg/L Barium Ba 1.3 mg/L ns 2 mg/L " 1.00 mg/L Benzene 0.01 mg/L 1.0 μg/L 5 μg/L " " Benzo(a)pyrene " 0.010 μg/L 0.2 μg/L 0.0028 μg/L " Beryllium Be " Boron B 2.4 mg/L 1.0 mg/L ...
Units are represented in UCUM with reference to a set of seven base units. [5] The UCUM base units are the metre for measurement of length, the second for time, the gram for mass, the coulomb for charge, the kelvin for temperature, the candela for luminous intensity, and the radian for plane angle.