Rating Newest Oldest. Best Answer: In hindsight, but for next time, be sure to ask how soon you can expect to hear the decision - whether you're handing in an app or being interviewed. In general, two weeks is fairly standard, so you made a good move making some money.
Density of Ethanol. The experimental data shown in these pages are freely available and have been published already in the DDB Explorer Edition. The data represent a small sub list of all available data in the Dortmund Data Bank. For more data or any further information please search the DDB or contact DDBST.
Best Answer: (1) The percent is by volume, so 4.5% of 225 mL = 10.25 mL. This means we need 10.25 mL of ethanol: 10.25 mL * 0.789 g/mL = 8.087 g ethanol. (2) beryllium chloride = BeCl2 = 80 g/mol density of water = 1 g/mL Because m = n (solute) / kg (solvent), n = m x kg = 0.125 kg * 0.050 m = 0.00625 mol.Using the molar mass this comes to 0.50 g BeCl2. (3) Ca(OH)2 = 74 g/mol. 25 g of it comes to 0.338 mol.2) beryllium chloride = BeCl2 = 80 g/mol density of water = 1 g/mL Because m = n (solute) / kg (solvent), n = m x kg = 0.125 kg * 0.050 m = 0.00625 mol.