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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 .
10 mG: Blender (30 cm or 1 ft away) [5] 1.3 μT to 2.7 μT: 13 mG to 27 mG: High power (500 kV) transmission lines (30 m or 100 ft away) [6] 6 μT: 60 mG: Microwave oven (30 cm or 1 ft away) [5] 10 −5 T 10 μT: 100 mG: 24 μT: 240 mG: Magnetic tape near tape head: 31 μT: 310 mG: Earth's magnetic field at 0° latitude (on the equator) 58 μT ...
For example, in the 1930s Widmark measured alcohol and blood by mass, and thus reported his concentrations in units of g/kg or mg/g, weight alcohol per weight blood. Blood is denser than water and 1 mL of blood has a mass of approximately 1.055 grams, thus a mass-volume BAC of 1 g/L corresponds to a mass-mass BAC of 0.948 mg/g.
The Occupational Safety and Health Administration has set an exposure limit of 0.05 mg/m 3 for vanadium pentoxide dust and 0.1 mg/m 3 for vanadium pentoxide fumes in workplace air for an 8-hour workday, 40-hour work week. [104]
Ferrovanadium dust is a mild irritant that affects the eyes when touched by contaminated skin and the respiratory tract when inhaled. The dust caused chronic bronchitis and pneumonitis in animals exposed to high concentration (1000–2000 mg/m 3) at intervals for two months. However, no such long-term effects have been observed in humans.
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 maximum solubility is 583.5 °C and 1.9% Mg 2 Si, which is why the sum of both elements in the common alloys is below this value. The stoichiometric composition of magnesium to silicon of 2:1 corresponds to a mass ratio of 1.73:1.
Toxic: a chemical that has a median lethal concentration (LC 50) in air of more than 200 parts per million (ppm) but not more than 2,000 parts per million by volume of gas or vapor, or more than 2 milligrams per liter but not more than 20 milligrams per liter of mist, fume or dust, when administered by continuous inhalation for 1 hour (or less if death occurs within 1 hour) to albino rats ...