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Topic: Cubic meter per mole


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  US Air Quality Gradebook - A Molecular View of Air Quality
The concentration limit for lead is in units of micrograms per cubic meter (ug/m
To relate this concentration to numbers of lead atoms, consider that a “mole” of a substance contains Avagadro’s number of atoms, and we obtain a mole in an amount of the substance equal to its atomic weight expressed in grams.
Scaling this down to the lower grade D concentration limit for lead of 0.081 millionths of a gram of lead per cubic meter of air yields 200,000,000,000,000 lead atoms per cubic meter.
www.creativemethods.com /airquality/molecules.htm   (669 words)

  
  Units: O
The resistivity of a conductor in ohm meters is defined to be its resistance (in ohms) multiplied by its cross-sectional area (in square meters) divided by its length (in meters).
One ounce mole of a chemical compound is the same number of ounces as the molecular weight of a molecule of that compound measured in atomic mass units.
Thus the ounce mole is equal to 28.349 52 moles.
www.unc.edu /~rowlett/units/dictO.html   (2960 words)

  
 Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal   (Site not responding. Last check: )
A mole is much like "a dozen" in that both units can describe any set of elementary objects, although the mole's use is usually limited to measurement of subatomic, atomic, and molecular structures.
A mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram (or 12 grams) of carbon-12, where the carbon-12 atoms are unbound, at rest and in their ground state.
The SI additionally defines Avogadro constant as having the unit reciprocal mole, as it is the ratio of a dimensionless quantity and a quantity with the unit mole.
www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=mole_(unit)   (1715 words)

  
 OFFICIAL GAZETTE
Cubic meter per second is the volume velocity for a substance of 1 cubic meter in volume to cross a given cross-section in a second.
The tesla is the magnetic flux density in a surface of one square meter caused by a uniform magnetic flux of 1 weber perpendicular to that surface.
Coulomb per kilogram is the exposure of the photonic ionizing radiation generated in 1 kilogram of air of ions of the same sign having a total charge of 1 coulomb when all electrons (positive and negative), freed by photons in the air, stop completely there and all of their energy flux remains in the air.
www.dncustoms.gov.vn /web_Eglish/english/nghi_dinh/ND_65_2001_ND-CP.htm   (3445 words)

  
 Cubic meter per mole fingerin Cubic meter per mole
The SI unit of molar volume is cubic metres per mole (m3mol-1).
For an ideal gas, the standard molar volume is the volume that is occupied by one mole of substance (in gaseous form) at standard temperature and pressure (STP) of 273.15 K (H2O freezing temperature) and 101325 Pa (1 atm).
Cubic centimetres (cm3), a measure of volume one million times smaller than a cubic metre, are sometimes also used, to give units of cm3mol-1.
www.find-ask.com /C/Encyclopedia/Cubic_meter_per_mole/Cubic_meter_per_mole.html   (327 words)

  
 Kids.Net.Au - Encyclopedia > Cubic meter per mole   (Site not responding. Last check: )
In chemistry, the molar volume of a substance is the volume of one mole of that substance.
Thus, the SI unit of molar volume is cubic meters per mole (m
The molar volume is usually given for a solid substance at 298 K.
www.kids.net.au /encyclopedia-wiki/cu/Cubic_meter_per_mole   (135 words)

  
 Environmental Protection Agency > Basic Concepts in Environmental Sciences > Module 2
The mole fraction is simply an expression of the number of moles of a compound divided by the total number of moles of all the compounds present in the gas.
Milligrams per cubic meter are frequently used to express the concentrations of both gases and particulate that are present at moderately high concentrations.
It is important to state the basis for the cubic meter volume because concentration data expressed as mass per cubic meter do not have the same numerical values at actual and standard conditions.
www.epa.gov /eogapti1/module2/concentrate/concentrate.htm   (2523 words)

  
 Molar volume - Biocrawler   (Site not responding. Last check: )
In chemistry, the molar volume of a substance is the ratio of the volume of a sample of that substance to the amount of substance (usually in mole) in the sample.
For an ideal gas, the standard molar volume is the volume that is occupied by one mole of substance (in gaseous form) at standard temperature and pressure (STP) of 273.15 K (H
The molar volume is usually given for a solid substance at 298.15 K (temperature of standard state).
www.biocrawler.com /encyclopedia/Cubic_meter_per_mole   (206 words)

  
 Measurement
The meter (m) is the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second.
It shows the relationship between volume expressed in cubic meters, and the equivalent volume in liters, and the mass of water, at maximum density which is about 4 degrees centigrade, that will fill that volume.
Similiarly, the unit of pressue called a 'pascal' is a newton per square meter, and is equal to a centinewton per square decimeter, and is equal to 100 micronewtons per square centimeter, and is equal to a micronewton per square millimeter.
home.att.net /~NCSDCA/SCIENCE/measure.htm   (1948 words)

  
 Environmental Protection Agency > Basic Concepts in Environmental Sciences > Module 2
milligrams per cubic meter, microgram per cubic meter) change when conditions of temperature and pressure change because the volume term changes with temperature and pressure in accordance with the ideal gas law.
The mole fraction of phenol vapor in a gas stream is 0.00001.
The sum of all of the mole fractions of the compounds present in the gas mixture must equal 1.0.
www.epa.gov /eogapti1/module2/concentrate/pp_answer/p_answer.htm   (328 words)

  
 Parts-per notation Summary
The expression may be on either a mass or a volume basis, or a combination of the two, such as micrograms of a chemical per kilogram of soil, or micrograms of chemical per liter of water.
A milligram is one part per million of a kilogram thus, one part per million (ppm) by mass is the same as one milligram per kilogram.
one millilitre (or cubic centimetre) in a cubic metre (or kilolitre) is 1 ppm by volume.
www.bookrags.com /Parts-per_notation   (1424 words)

  
 Process for producing stereoregular polymers having a narrow molecular weight distribution - Patent 5093415
At least 2 moles of the titanium compound should ordinarily be employed per mole of the magnesium compound.
Preferably from 4 moles to 100 moles of the titanium compound are employed per mole of the magnesium compound, and most preferably from 4 moles to 20 moles of the titanium compound are employed per mole of the magnesium compound.
Usually the dispersion contains from 0.005 to 2.0 moles of the solid magnesium compound per mole of halohydrocarbon, preferably from 0.01 to 1.0 mole of the solid magnesium compound per mole of the halo hydrocarbon.
www.freepatentsonline.com /5093415.html   (7080 words)

  
 ATSDR - PHA - Air Force Plant PJKS, Waterton, Jefferson County, Colorado
/mole are not expected to volatilize from water or wet soil.
For birth defects, both the number of cases and rates per 1,000 live births in all 11 census tracts did not exceed what was expected for the time period.
For fetal loss and neonatal deaths, the number of cases and rates per 1,000 live births plus fetal losses and 1,000 live births, respectively, did not exceed the expected numbers for the time period; additionally, one census tract had a significantly lower number of cases and rate.
www.atsdr.cdc.gov /HAC/PHA/pjks/pjk_p4b.html   (11484 words)

  
 International Starch Institute: SI units
The kilogram is defined as a mass equal to that of the International Prototype Kilogram - a platinum-iridium cylinder which in 1889 replaced the previous platinum protype matching the mass of 1 cubic decimetre of pure water at the temperature of its maximum density (4.0° C/39.2° F)).
In 1971 the mole was defined as the amount of substance of a system that contains as many elementary entities—which may be molecules, atoms, ions, and so on—as there are atoms in 0.012 kilogram of carbon-12.
The radian is the plane angle between two radii of a circle that cut off on the circumference an arc equal in length to the radius.
www.starch.dk /isi/tables/SIunits.htm   (0 words)

  
 Method and apparatus for simultaneous heat and mass transfer utilizing a carrier-gas - Patent 6911121
As the air rises in the evaporation portion of the apparatus 15 (evaporation chamber), the air heats and evaporates the separable component from the feed 30 using the latent heat of condensation from the dew-formation portion of the apparatus 20 (dew-formation chamber) that is transferred through the heat transfer wall 10.
is the moles of water vapor per moles of carrier gas.
As the air moves from the bottom to the top of the tower, heat is transferred into the evaporation side through the heat transfer wall, thereby allowing the temperature of the saline feed and the carrier-gas to rise and evaporate water from the wetting saline liquid which coats the heat transfer wall.
www.freepatentsonline.com /6911121.html   (9002 words)

  
 Suchmaschine   (Site not responding. Last check: )
In this example, moles are used to calculate the mass of CO given off when 1 g of ethane is burned.
So 1 g of ethane is 1/30th of a mole; the amount burnt was 1/30th of a mole (remember that it is a number, quite like "half a dozen").
Next, we need the molecular mass of CO The atomic mass of carbon is 12 and that of oxygen is 16, so one mole of carbon dioxide is 12 + (2 × 16) = 44 g/mol.
www.dmoz.ch /lexikon.cgi?sprache=en&q=Mole_%28unit%29   (1875 words)

  
 Conversions and Formulas
A normal cubic meter (Nm) is the metric expression of gas volume at standard conditions and it is usually defined as being measured at 0 °C and 1 atmosphere of pressure.
A standard cubic foot (scf) is the USA expression of gas volume at standard conditions and it is very often defined as being measured at 60 °F and 1 atmosphere of pressure.
As another example, a regulation might limit the concentration of particulate matter to 0.1 grain per standard cubic foot (i.e., scf) of dry exhaust gas corrected to 12 volume percent CO A standard cubic foot of dry gas is often denoted as "dscf" or as "scfd".
www.air-dispersion.com /formulas.html   (3400 words)

  
 ITOG-U - Course: SI Units (xc-001)   (Site not responding. Last check: )
Originally, 1 meter, the basic unit of measurement of the metric system, was defined as 1/10 000 000 of the distance from the equator of the earth to either pole.
In 1983 it was further defined as: 1 meter = the distance light travels in a vacuum in 1/299 792 458th of a second.
The amount of mass contained in a cubic decimeter or 1 L of pure water at 0° C just happens (ha ha) to be equal to 1kg of mass.
www.itog.com /xc-001.shtml   (1197 words)

  
 [No title]
Pounds per cubic foot is a measure of density, which aquarists are most likely to encounter in relation to the bulk density of solids such as calcium hydroxide, calcium oxide or calcium carbonate powders.  A calculator for various density-related units can be found here.
Originally, the meter was designed to be one ten-millionth of the distance between the Equator and the North Pole. Over the years it has become better defined, and is now defined in terms of the speed of light and the specific fraction of the length that light travels in a second in vacuum.
Molal is a concentration unit defined as one mole per kg of solution. Since 1 L of water weighs close to 1 kg, molal (mole/kg) and molar (mole/L) are close to the same.
reefkeeping.com /issues/2005-08/rhf/index.php   (8682 words)

  
 VISCOSITY
When particles of a given mass immersed in a viscous fluid are exposed to a gravitational field (force per unit mass) an acceleration is imposed to them and, in time, the acceleration is reduced to zero and the velocity reaches a constant value.
The units are a bit different in this case because the potential has units of joules per mole and the field is expressed in newtons per mole.
The units of this gradient are no longer newtons per kilogram, but newtons per mole, and the unit used to measure the amount of matter on which the field acts to generate the driving force is the mole.
www.fiu.edu /~cuervol/PhysiologicalMechanisms/Viscosity.htm   (2312 words)

  
 Metric System and its History
For example, speed can be expressed as meters per second or volume in terms of cubic meter (a liter is the volume equal to a cube with each side 0.1 meters).
For example, a decimeter is a tenth of a meter and a dekameter is 10 meters.
Likewise, a kilogram was defined as a cubic decimeter of water (a cube 0.1 meters on each side), which is a thousand cubic centimeters or a thousand grams.
www.france-property-and-information.com /metric-system-and-history.htm   (1803 words)

  
 Capgo - Measurement Theory
The meter was adopted by France in 1795, and for a long time was a length of indium rod.
From 1960 the meter was redefined in terms of the wavelength of krypton light (the meter was set to be 1,650,763.73 wavelengths in vacuum of the orange-red line of the spectrum of krypton-86).
Newtons per meter between a pair of infinitely long parallel wires 1 meter apart in a vacuum.
www.capgo.com /Resources/Measurement/MeasHome/MeasTheory.html   (1281 words)

  
 goodcoffeeonline.com - Site units and coversion reference document - site resources
Originally meant to be # 1e-7 of the length along a meridian from the equator # to a pole.
16-gage is listed as approximately #.0625 inch thick and 40 ounces per square foot (the original standard was # based on wrought iron at.2778 pounds per cubic inch; steel has almost # entirely superseded wrought iron for sheet use, at.2833 pounds per cubic # inch).
The atomic weight of an element is the ratio of the mass of # a mole of the element to 112 of a mole of Carbon 12.
www.goodcoffeeonline.com /pages/units.pl?sid=3831184765   (6641 words)

  
 Pure Water Concentration   (Site not responding. Last check: )
A mole of water is represented by 18 grams of the liquid.
Therefore the concentration of pure water in moles per litre is: (1000g H20 per L) / (18 g H2O per mole) = 55.55 M/L Regards, ProfHoff 666 ===================================================== Molarity is moles/liter.
The molar mass of water is 18.015 g/mole, and a cubic meter is 1000 liters.
www.newton.dep.anl.gov /askasci/chem03/chem03038.htm   (386 words)

  
 Brainboost - how many liters in a gram
0.000004 moles per liter x 34.08 gram per mole = 0.000140 gram per liter or 0.140 milligram per liter..
These units are conveniently related: one liter of water weighs 1,000 grams and one cubic meter contains 1,000 liters..
Thus, 111.0 grams of anhydrous CaCl2, 147.0 grams of dihydrated CaCl2, or 219.1 grams of CaCl2 hexahydrate in one liter final volume all produce a 1 mole per liter solution, abbreviated 1M..
www.brainboost.com /search.asp?Q=how+many+liters+in+a+gram&lfmq=1   (297 words)

  
 SI Units & Standards
The candela is the luminous intensity, in the perpendicular direction, of a surface of 1/600,000 square meter of a flbody at the temperature of freezing platinum under a pressure of 101,325 newtons per square meter.
The meter is the length equal to 1,650,763.73 wavelengths in vacuum of the radiation corresponding to the transition between the levels 2p sub 10, and 5d sub 5 of the krypton-86 atom.
Revolutions per minute may be written only as r/min, miles per hour may be written only as mi./hr, and inches per second may be written only as in./s and so on.
www.teamrocs.com /technical/pages/siunits.htm   (1422 words)

  
 WWWolfe Chemical Measurements
While it is convenient to measure the dimensions of a room in meters, it is unwieldy to express distances between cities in meters.
While the meter is a convenient day-to-day measurement, it is generally too large to use for length measurements in chemistry because chemists deal with minute objects like atoms and molecules.
One cubic meter is equivalent to 264 gallons (gal), and for most chemical measurements the cubic meter is too large.
www.mindspring.com /~drwolfe/Measurements.htm   (5621 words)

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