The vapor pressure of water at 25.0 degree C is 23.8 torr. Determine the mass of

Question

The vapor pressure of water at 25.0 degree C is 23.8 torr. Determine the mass of glucose (molar mass = 180 g/mol) needed to add to 500.0 g of water to change the vapor pressure to 23.3 torr. 10.7 g 107 g 90.0 g 6.35 kg 184 g You have a 10.40-g mixture of table sugar (C12H22O11) and table salt (NaCl). When this mixture is dissolved in 150. g of water, the freezing point is found to be -2.24 degree C. Calculate the percent by mass of sugar in the original mixture. 39.0% 43.8% 53.9% 61.0% none of these Consider the following equilibrium: with K = 1.6 times 10-5. 1.00 mole of pure NOCl and 0.944 mole of pure Cl2 are placed in a 1.00-L container. Calculate the equilibrium concentration of NO(g). 2.06 times 10-3 M 9.44 times 10-1 M 1.06 M 5.82 times 10-3 M 4.12 times 10-3 M

Explanation / Answer

1) b 2)d 3)d

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