Calculate molality (m), in mol/kg, using the formula,Δt=Kf⋅m(Kf =3.9oC−kg/molfor lauric acid). Calculating Molality Molality can be defines as the moles of the solute per kilograms of the solvent. The molality of a solution is generally reporte...
Re: How to calculate the % by mass? « Reply #1 on: January 31, 2013, 01:16:40 AM » You calculate the amount of you acetic acid by titration. With the molar mass of acetic acid you can convert to the mass. The given mass was 25 g because density was 1,000 g/ml.The rati...
A) Calculate the volume of 6 M acetic acid needed to prepare 100 mL of a 0.10 M acetic acid (CH3COOH) solution. B)Calculate the mass of sodium acetate (CH3COONa) required to prepare 50 mL of a 0.10 M What is the molarity of a sodium acetate solution that c...
How much solid ammonium chloride would be needed to make 100 mL of a 0.5 M solution? How much ammonium chloride is in 889 milliliters of a 0.17 molar ammonium chloride solution? Answer in units of mol. a) What mass of ammonium chloride would be ...
Calculate the mass of ethanol required to heat 200 mL of water from 21 degrees C to 45 degree C. Calculate the amount of energy (kJ) lost when 50 mL of water at 0 Celsius freezes at 0 Celsius. Calculate the amount ...
Show how you can determine the molecular formula for acetic acid which is found in vinegar given the empirical formula CH2O and the added information that the molar mass of acetic acid is 60.05 g/mole Given a compound's molar mass (99 g/mol)...
Calculate the molality of a solution that has 1.02kg sucrose C_{12}H_{22}O_{11} dissolved in 554g water. Calculate the molality of a solution containing 12.5 grams of C2H6O2 dissolved in 135 grams of water. What is the molality of a solution of sucrose (molar mass = 342...
Calculate the molality of the solution. Given an aqueous solution that is 20% NH4Cl, calculate the molality. Use the molar mass of NH4Cl to help determine the answer. Suppose 2.80 grams of NaNO3 is added to 17.20 grams of water. Calculate the molality of the so...
a. 700 mL of 0.270 M SrBr_2 b. 86.5 g of 0.180 m KCl, c. 126.0 g of a solution that is 6.40% glucose ( Calculate the mass of water that must be added to 0.45 mol of glucose to make a solution of 15 percent by mass. The molar mass of g...
Some examples of weak acids are acetic acid and oxalic acid. Answer and Explanation: The dissociation of ethyl ammonium ion in the solution is given by the reaction below: {eq}\rm C_2H_5NH_3^+ + H_2O \rightarrow C_2H_5NH_2 +......