The mole mol is a number that relates molecular or atomic mass to a constant number of particles | The kilogram kg was originally defined as the mass of a liter i |
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The mass of an object is the amount of material it contains | 16 of the thermodynamic temperature of the triple point of water exactly 0 |
From the gram, we get the rest of the metric units using the standard metric prefixes.
It is currently defined as the mass of a platinum-iridium kilogram sample maintained by the Bureau International des Poids et Mesures in Sevres, France | How many tons is this? It is defined as the amount of a substance that contains as many elementary entities as there are atoms in 0 |
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Therefore, a second is now defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium-133 atom | Weight is measured in standard customary units |
This scale starts at 0 K.
However, we now know that a complete rotation of the Earth actually takes 23 hours, 56 minutes, and 4 | |
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The incremental size of the kelvin is the same as that of the degree on the Celsius also called centigrade scale |