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Here are the conversion factors for those various expressions of wind speed: 1 m/s = 2.237 statute mile/h = 1.944 knots 1 knot = 1.151 statute mile/h = 0.514 m/s 1 statute mile/h = 0.869 knots = 0.447 m/s. Note: 1 statute mile = 5,280 feet = 1,609 meters
At 10 000 ppm the solution is a deep red colour. As the concentration decreases the colour becomes orange, then a vibrant yellow, with the final 1 ppm sample a very pale yellow. In science and engineering , the parts-per notation is a set of pseudo-units to describe small values of miscellaneous dimensionless quantities , e.g. mole fraction or ...
The conversion equations depend on the temperature at which the conversion is wanted (usually about 20 to 25 °C). At an ambient sea level atmospheric pressure of 1 atm (101.325 kPa or 1.01325 bar), the general equation is:
where TDS is expressed in mg/L and EC is the electrical conductivity in microsiemens per centimeter at 25 °C. The conversion factor k e varies between 0.55 and 0.8. [5] Some TDS meters use an electrical conductivity measurement to the ppm using the above formula. Regarding units, 1 ppm indicates 1 mg of dissolved solids per 1,000 g of water. [6]
For some usage examples, consider the conversion of 1 SCCM to kg/s of a gas of molecular weight , where is in kg/kmol. Furthermore, consider standard conditions of 101325 Pa and 273.15 K, and assume the gas is an ideal gas (i.e., Z n = 1 {\displaystyle Z_{n}=1} ).
1120 mg/kg (rat, oral) 1000 mg/kg (rabbit, oral) 710 mg/kg (mouse, oral) [2] LC 50 (median concentration) ... TWA 10 ppm (40 mg/m 3) [1] IDLH (Immediate danger) 1400 ...
8420-10000 mg/kg (rat, oral) 5000-7500 mg/kg (rabbit, dermal) ... 1000 ppm [1] Supplementary data page ... The conversion uses N 2 O 4 and nitric acid at 5–10 °C ...
6270 mg/kg (rat, oral) [2] LC Lo (lowest published) 1000 ppm (rat, 4 ... Rates of this conversion are sensitive to the presence of acids and bases, ...