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Molar mass: 209.26 g·mol −1 ... Sigma Aldrich Buffer Calculator - Useful tool to calculate weight, volume, or concentration from molecular weight.
Standard molar entropy, S o solid? J/(mol K) Heat capacity, c p? J/(mol K) Enthalpy of transition, Δ trs H o: 6.7 kJ/mol at –87.0 °C crystal II → crystal I Entropy of transition, Δ trs S o: 36 J/(mol·K) at –87.0 °C crystal II → crystal I Liquid properties Std enthalpy change of formation, Δ f H o liquid –156.4 kJ/mol Standard ...
Molar mass: 125.12528 Melting point: 43 to 46 °C (109 to 115 °F; 316 to 319 K) Boiling point: 210 °C (410 °F; 483 K) Hazards GHS labelling: Pictograms.
Molar mass: 222.281 g·mol −1 Appearance Colorless liquid Density: 1.009 g/mL [1] Melting point: −30 °C (−22 °F; 243 K) [1] ... Sigma Aldrich MSDS, including ...
Standard molar entropy, S o solid? J/(mol K) Heat capacity, c p: 92.36 J/(mol K)at 298.15 K Std enthalpy change of state transition, Δ trs H o: 0.8979 kJ/mol at −56.2 °C (crystal II → crystal I) Std entropy change of state transition, Δ trs S o: 4.14 J/(mol·K) at −56.2 °C (crystal II → crystal I) Liquid properties Std enthalpy change
Molar concentration or molarity is most commonly expressed in units of moles of solute per litre of solution. [2] For use in broader applications, it is defined as amount of substance of solute per unit volume of solution, or per unit volume available to the species, represented by lowercase : [3]
Ellman's original 1959 publication estimated the molar extinction at 13,600 M −1 cm −1, and this value can be found in some modern applications of the method despite improved determinations. [6] Commercial DTNB may not be completely pure, so may require recrystallization to obtain completely accurate and reproducible results.
Equivalent weights may be calculated from molar masses if the chemistry of the substance is well known: sulfuric acid has a molar mass of 98.078(5) g mol −1, and supplies two moles of hydrogen ions per mole of sulfuric acid, so its equivalent weight is 98.078(5) g mol −1 /2 eq mol −1 = 49.039(3) g eq −1.