Appl DSC calorimetry for molar mass determine by freezing point depressionD'Amelia, R
Ethanol has the properties of a highly efficient solvent. Miscible with many organic and inorganic substances. It is noticeably lighter than water, being in an open container, denatured, evaporates abundantly, spreading a characteristic alcohol smell. Vapors of the substance are also flammable, form ...
Calculate the mass of KHC_8H_4O_4 (molar mass = 204.23 g/mol) that reacts with 15 mL of 0.1 M NaOH solution. Show steps. Show the calculation of the NaOH molarity if 20.7 mL of NaOH are required to titrate 0.53 grams of KHC8H4O4. How many millil...
Molar mass is also known as molecular weight, which is the sum of the total mass in grams of all the atoms that present in a particular molecule. If we know the formula of a compound then we can easily determine the compound’s molar mass. We kn...
For a gas at standard temperature and pressure with a density of2.8gL, determine its molar mass. Molar Mass: The molar mass of a chemical compound calculates the mass per mole of the chemical compound. It is equal to the mass divided by the number of mol...
The weight average molar mass (M(w)) and root mean square radii of starches from waxy maize (Amioca), waxy rice flour, cassava, Hylon V, Hylon VII, and potato amylose were determined by size-exclusion chromatography (SEC) and multiple-angle laser light scattering (MALLS). Dimethylsulfoxide...
a sample of gas has a density of 1.96g/l at STP.Determine its molar mass. 答案 1.96克密度/升,STP下1mol气体的体积为22.4L 所以1mol该气体质量为:1.96g/L×22.4L=43.904g≈44g 所以该气体摩尔质量为44g/mol 相关推荐 1 a sample of gas has a density of 1.96g/l at STP.Determine its mol...
The determination of the molar mass of soft nanoparticles is essential to estimate their (molar) concentration in dispersions. Measuring this quantity by conventional methods, however, often proves challenging. We describe a facile approach to determine the molar mass of (soft) nanoparticles via ...
The utility model relates to an experimental apparatus using a freezing point lowering method to determine solute molar mass. The experimental apparatus includes a sample tube; the bottom of the sample tube is arranged in an air bushing; the top of the sample tube is provided with a rubber ...
The molar mass of molecule is to be calculated by using mole value and mass value of molecule. Concept introduction: Molar mass is also known as molecular weight, which is the sum of the total mass in grams of all the atoms that present in a parti...