Web Results

Parts-per notation


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 mass fraction. ... expressed in ...

What does ppm or ppb mean? - National Environmental Services ...


tion measurement is parts per billion (ppb). One ppb ... ppb is equal to microgram per liter (µg/L). A µg/L is ... mass of a chemical or contami- nate per unit volume ...

What is atomic mass unit (AMU or amu)? - Definition from WhatIs.com


Definition from WhatIs.com ... Part of the IT standards and organizations glossary: ... The mass of an atom in AMU is roughly equal to the sum of the number of ...

What is 1 gram equal to? | Reference.com


A kilogram is defined as the mass of a particular cylinder made out of iridium and platinum. ... What is the formula for converting milligrams per kilograms to parts per million? ... What does 1000 grams equal? ... The prefix "kilo" means 1,000.

What is the mass-mass percent concentration of a solution ...


The mass of the solution is equal to the... ... A: The two parts of a solution are the solvent and the solute. ... How does temperature affect the fizz in soda? Q: ... Definition of Mass Mass Percent Concentration · Percent Concentration Calculator ...

ChemTeam: What does "ppm" mean?


One part per million would mean that there is one gram of the pollutant in every ... Problem #5: Show why a mass of 0.145 g of KMnO4 in a 500 mL volumetric ...

Weight / Mass - Think Metric!


For most things in everyday usage, they mean pretty much the same. ... The kilogram is also divided into 1000 parts called grams. .... which was carefully defined (see page on length) we can divide that into 100 equal parts, called centimetres.

What is the significance of E = mc2? And what does it mean ...


The momentum of the box, Pbox, is also equal to its mass, M, times the velocity, ... (The target will essentially have moved a slight distance closer, meaning the ... Scientific American is part of Springer Nature, which owns or has commercial ...

Mass, Density, and Volume - Encyclopedia.com


Density is the ratio of mass to volume—or, to put its definition in terms of ... the case of subatomic particles, is part of an atom); is convertible into energy—and has mass. .... How many gallons of helium does it take to equal the mass of the iron?

CHEM-GUIDE: Concept of equivalent mass


... which combines or displaces 1 part of hydrogen or 8 parts of oxygen or 35.5 parts of chlorine by mass. ... A more workable definition is given as : ... Equivalent mass is equal to the molecular or atomic mass divided by the number of electrons  ...

Equal Parts By Mass | Define Equal Parts By Mass at Dictionary.com
dictionary.reference.com/browse/Equal Parts By Mass
The world's most popular free online dictionary with definitions, spell check, word origins, example sentences, audio pronunciations, Word of the Day and more!
More Info

What does "parts by weight" or "parts by mass" specifically mean?


Apr 1, 2016 ... Equivalent mass may be defined as the number of parts by mass of a substance which combines with or displaces directly or indirectly 1.008 ...

Equal Parts - Definition, Examples & Fun Math Worksheets | Splash ...


Definition of Equal Parts explained with illustrated examples. Also, practice lots of math problems with fun math worksheets at Splash Math.

Glossary: Parts per billion - GreenFacts


Definition: A weight to weight ratio used to describe concentrations. Parts per billion (ppb) is the number of units of mass of a contaminant per 1000 million units of total mass. ... In that case 1 ppb equals 1 µg of substance per kg of solid ( µg/kg).