Until 2019 the kilogram was defined as “the mass equal to the International Prototype of the Kilogram (IPK), a platinum-iridium rod housed at the International Bureau of Weights and Measures in Sevres, France” This was changed to create a definition based...
Yes, a mole is the SI unit of ‘amount of substance’: Unit Mole Unit Symbol mol Base Measure Amount of Substance Physical Constant Avagadro's constant - a value of 6.02214076 × 1023 Definition The amount of substance that contains the same number of...
As the volume of gases are greatly affected by changes in temperature and pressure it is important to specify these at which any measurement of volume is made It is often useful to correct results to standard temperature and pressure: Standard Temperature =...
