Calculate the percent by mass of a solution made by dissolving 34.0g of NH3 in 2.00 x 10^3 mL of water. (molar mass NH3 = 17.04 g/mol, density of H20 = 1.00 g/mL).
Calculate the percent by mass of a solution made by dissolving 34.0g of NH3 in 2.00...
Calculate the vapor pressure of a solution made by dissolving 94.5 g of urea (molar mass= 60.06 g/mol) in 214.5 mL of water at 35°C (Hint: The vapor pressure of pure water at 35°C is given in the table below. Assume the density of the solution is 1.00 g/mL.) What is the magnitude of vapor-pressure lowering? mmHg
Be sure to answer all parts. Calculate the vapor pressure of a solution made by dissolving 87.8 g of urea (molar mass = 60.06 g/mol) in 224.5 mL of water at 35°C. (Hint: The vapor pressure of pure water at 35°C is given in the table below. Assume the density of the solution is 1.00 g/mL.) I nHg What is the magnitude of vapor-pressure lowering? D nHg
10. How many grams of NHs will dissolve in 0.10 L of solution when its partial pressure is 7.6 torr? (h-58 m Calculate the mole fraction of NaCI in a solution that is prepared by dissolving 20.0 g NaCI in atm 11. 90.0 g of H20. 12. Calculate the parts per million of a solution made by dissolving 0.340 g of NH, in 2.00 x 10 mL of water (MMNH3-17.04 mol, di 20 = 1.00 mL).
A solution was made by dissolving 5.60 mg of hemoglobin in water to give a final volume of 1.00 mL. The osmotic pressure of this solution was 2.14×10-3 atm at 25.0°C. Calculate the molar mass of hemoglobin, which is a molecular compound and a nonelectrolyte. Give your answer in g/mol.
14. If a solution is made by dissolving 14.5 g of Fe(NO3)3 in 455 ml of water, what is the mass percent of iron and nitrate in this solution? Assume 1.00 g/ml density of the water. 4 pts
14. If a solution is made by dissolving 14.5 g of Fe(NO3)3 in 455 ml of water, what is the mass percent of iron and nitrate in this solution? Assume 1.00 g/ml density of the water. 4 pts
please help 6) What is the mass percent of solute in solution made by dissolving 25.6 g of Nal in 150mL of water? (Density of water is 1.0g/mL) (2pts)
Determine the molality of a solution made by dissolving 0.134 moles of glucose in 471 mL of water. Assume the density of water is 1.00 g/mL. Determine the molality of a solution made by dissolving 28.1 g of CH3OH in 513 g of H20.
Calculate the molality and mole fraction of a solution made by dissolving 8 gm of (Molar mass of NaOH = 40 g / mol Q.2 pure NaOH in 200 ml of water
D Question 40 15 pts Calculate the mole fraction, molarity and molality of NH3 if it is in a solution composed of 30.6 g NH3 in 81.3 g of H20. The density of the solution is 0.982 g/mL and the density of water is 1.00 g/mL. (The molar mass for NH3 is 17 and 18 for H20). Answers are to be shown to 3 significant digits (X.XX or 0.XXX or XXX) 1. The mole fraction for NH3 is 2. The...