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Through cryoscopy, a known constant can be used to calculate an unknown molar mass. The term "cryoscopy" means "freezing measurement" in Greek . Freezing point depression is a colligative property , so Δ T depends only on the number of solute particles dissolved, not the nature of those particles.
The other and most popular formula is the Dearden and O'Neill formula, which was adopted by IIW in 1967. [4] This formula has been found suitable for predicting hardenability in a large range of commonly used plain carbon and carbon-manganese steels, but not to microalloyed high-strength low-alloy steels or low-alloy Cr-Mo steels.
M is the molar mass of the solvent. T b is boiling point of the pure solvent in kelvin. ΔH vap is the molar enthalpy of vaporization of the solvent. Through the procedure called ebullioscopy, a known constant can be used to calculate an unknown molar mass. The term ebullioscopy means "boiling measurement" in Latin.
The CRC Handbook of Chemistry and Physics is a comprehensive one-volume reference resource for science research. First published in 1914, it is currently (as of 2024) in its 105th edition, published in 2024. It is known colloquially among chemists as the "Rubber Bible", as CRC originally stood for "Chemical Rubber Company". [2]
In chemistry, the molar mass (M) (sometimes called molecular weight or formula weight, but see related quantities for usage) of a chemical compound is defined as the ratio between the mass and the amount of substance (measured in moles) of any sample of the compound. [1] The molar mass is a bulk, not molecular, property of a substance.
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[4] [5] KC 8 is a superconductor with a very low critical temperature T c = 0.14 K. [6] Heating KC 8 leads to the formation of a series of decomposition products as the K atoms are eliminated: [citation needed] 3 KC 8 → KC 24 + 2 K. Via the intermediates KC 24 (blue in color), [3] KC 36, KC 48, ultimately the compound KC 60 results.
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