Respuesta :
A gram is a unit used in medication order and prescription and is abbreviated as gm or g.
The International System of Units (SI) uses the gram (formerly gramme;[1] SI unit sign g) as the unit of mass that corresponds to one thousandth of a kilogram.
The term "absolute weight" was first used in a definition from 1795 that stated "the absolute weight of a volume of pure water equal to the cube of a hundredth part of a metre [1 cm3] and at the temperature of melting ice". Later, the defining temperature (0 °C) was changed to 4 °C, the temperature at which water has its maximum density.
By the late 19th century, however, there was a push to make the kilogram the base unit and the gram a derived unit. One gram is one one-thousandth of a kilogram, according to the 1960 International System of Units (i.e., one gram is 1×10−3 kg). The kilogram is defined by the International Bureau of Weights and Measures as of 2019 using the Planck constant (h), the whose fixed numerical value is 6.626070151034 kg⋅m2⋅s−1.
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