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SL-HL IB Chemistry Definitions Author: Darby Davis Created Date: 20130516041415Z ...
A more commonly used unit of volume is derived from the decimeter (0.1 m, or 10 cm). A cube with edge lengths of exactly one decimeter contains a volume of one cubic decimeter (dm 3). A liter (L) is the more common name for the cubic decimeter. One liter is about 1.06 quarts.
Mean bond enthalpy: The enthalpy change when one mole of a specified covalent bond is broken averaged out across the range of compounds. Molar enthalpy change: The enthalpy change per mole of substance.
14 Νοε 2022 · Explain the meaning and use of unit dimensions; state the dimensions of volume. State the quantities that are needed to define a temperature scale, and show how these apply to the Celsius, Kelvin, and Fahrenheit temperature scales. Explain how a Torricellian barometer works.
(5) The definition applies to pure substance, where m is the total mass and V is the total volume. However, corresponding quantities may also be defined for a mixture as m/n and V/n, where n = ∑ i ni. These quantities are called the mean molar mass and the mean molar volume respectively.
Chemistry is the branch of science which studies matter—its composition, prop-erties, and changes. Scientists attempt to discover and describe matter, then deter-mine why these kinds of matter have particular characteristics and why changes in this matter occur.
Avogadro’s law : one mole of any gas occupies a volume of 24 dm3 or 24 l at room temperature and pressure (r.t.p) and equal volumes of all gases measured at rtp must contain the same number of molecules
