The chemical formula for methanol is CH3OH. This means that in one molecule of methanol, there are 4 atoms of hydrogen, 1 atom of oxygen, and 1 atom of carbon. Answer and Explanation: To find the molecular mass of methanol, you need to identify the molar masses for each of the indiv...
The enthalpy of vaporization is the amount of energy (joules) that must be added to one gram or one mole of a liquid substance, to transform it into the gas phase at the same temperature. As with the specific heat capacity of a substance, the...
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The density of ethanol is 0.789 g/mL, and that of water is 1.00 g/mL. Calculate the mole fraction of C_2H_5OH in a solution that contains 84.0 grams of ethanol, C_2H_5OH, and 120.0 grams of methanol, CH_3OH. An aqueous solution contains 6...
Calculate the molar fraction of acetone, CH3COCH3, in an acetone-water solution made by mixing 2.0 g of acetone with 90 mL of water. (Density of water is 1 g/mL.) From this information, calculate the In a solution prepared by dissolving CaCl2(s) in water, what is the solute,...
Butylated hydroxytoluene(BHT) is white or light yellow crystal. BHT has a melting point of 71°C, a boiling point of 265°C, a relative density of 1.048 (20/4°C), and a refractive index of 1.4859 (75°C). Solubility of BHT at normal temperature: methanol 25, ethanol 25-26, ...
Methyl cinnamate is a white to slightly yellow crystalline substance with a cherry-like aroma. It has a melting point of 34℃ and a boiling point of 259.6℃. Its refractive index (nD20) is 1.5670, and its relative density (d435) is 1.0700. It is soluble in ethanol (1ml in 4mL of ...
3. Extraction of Chlorogenic acid The extraction of plant-derived Chlorogenic acid is mainly carried out using organic solvents such as ethanol, acetone, methanol, etc., including the stone mercaptan method and the lead salt precipitation method. , alcohol precipitation method and other new methods....
If you have a stock solution of 10 mg/mL of BSA, how would you make up 10 mL of a 0.01% solution? 200 mg equals how many mL? What is the mass of 36.13 mL of a solution with a density of 1.60 g/mL? If you are administering an oral acetaminophen...