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...
Calculate how many grams of NH4Cl are contained in 100 ml of NH4Cl solution knowing that the molarity of HCl is 1.5305 M and the molarity of NH3 is 1.4999 M? Concentrated ammonium hydroxide (aq ammonia) has a density of 0.90g/mL and is 28% by ...
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...
What is the molality of a solution of sucrose (molar mass = 342) dissolved in water that is 25% sucrose by mass? Calculate the molality of a solution that contains 0.820 moles of glucose in 1.50 kg of water. Calculate the molality of a solution that contains 0.805 moles of g...
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 ...
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 solution. A solution is prepared by dissolving 25.0 g of NH_4Cl (53.49 g/mol) in 400.0 g of water. The ...
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 glucose is 180 g / mol. The mass/mass percent concentration is the mass of solute divided by the mass of the solution...
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...
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 +......
How many moles of water are in this sample? Consider the problem of determining how many molecules are present in 325 mg of aspirin. a) Knowing that the molar mass of aspirin is 180.157 g/mol, explain how to show that there are about 0.00180 moles of a...