Compute the molar mass of vitamin c

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Reference no: EM131871084

1. Approximately what will be the total solute molarity for a 0.13 M solution of (NH4)2CO3?

2. Compute the molar mass of vitamin C if a solution containing 16.7 g in 76 g of water freezes at -2.36°C. (Assume vitamin C does not ionize in water).

3. Calculate the molality of a solution that contains 96.3 g of benzoic acid, C6H5COOH, in 400.1 mL of ethanol, C2H5OH. The density of ethanol is 0.789 g/mL.

4. A solution contained 18.1 g of N2H4CO, 11.8 g of C6H12O6, and 65.1 g of H2O. Calculate the mole fraction of water.

5. The Henry's law constant (kh) for O2 in water at 20°C is 0.00128 mol/(L atm). How many grams of gas will dissolve in 2.46 L of H2O in contact with pure O2 at 2.65 atm? 

6. The solubility of a compound with a molecular weight of 199.7 is determined to be 26.9 g in 300.0 g of water at 398 K. Express this concentration in terms of molality.

7. Express the concentration of the solute from the problem above as a mole fraction.

Reference no: EM131871084

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