7. Calculate by factors the following: a. The tons of limestone (CACO3) needed for the preparation of 5 tons of lime (CaO). b. The pounds of BaCI2needed to furnish 1.5lb of chlorine by an clectrolyte process, c. The weight of Oxalic acid (H2C204°2HO), in milligram to precipitate the Calcium in 0.5000 sample of Phosphate rock of the composition Ca3(PO4)2.

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GLOBE O
71%
12:35
Problem Set | (1B) An...
1. What is the molality of a solution labeled "8.6% glucose (C,H,0,) by
weight?" (Note: If the question does not give the solvent, assume it is
water.)
2. Caleulate the mole fraction of C2HSOH in a solution that contains 46
grams of ethanol, C2H5OH, and 64 grams of methanol, CH3OH.
3. Calculate the molality of a solution that contains 51.2 g of naphthalene,
CoH, in 500 ml. of carbon tetrachloride. The density of CCI, is 1.60
g/ml.
4. Consider the three statements below. Which statement(s) is(are) true?
1. Hydration is a special case of solvation in which the solvent is water.
2. The oxygen end of water molecules is attracted toward Ca2+ ions.
3. The hydrogen end of water molecules is attracted toward Cl- ions.
S. Culculate the mole fraction of C2HSOH in a solution that contains 46
grams of ethanol, C2H5OH, and 64 grams of methanol, CH3OH.
6. The vapor pressure of pure water at 850C is 434 torr. What is the vapor
pressure at 850C of a solution prepared from 100 ml. of water (density
1.00 g/ml.) and 150 g of diglyme, C6H1403, a nonvolatile substance?
7. Calculate by factors the following:
a. The tons of limestone (CaCO3) needed for the preparation of 5 tons of
lime (CaO).
b. The pounds of BaCI2needed to furnish 1.51b of chlorine by an clectrolyte
process,
c. The weight of Oxalic acid (H2C204*2HO), in milligram to precipitate
the Calcium in 0.5000 sample of Phosphate rock of the composition
Ca3(PO4)2.
Transcribed Image Text:GLOBE O 71% 12:35 Problem Set | (1B) An... 1. What is the molality of a solution labeled "8.6% glucose (C,H,0,) by weight?" (Note: If the question does not give the solvent, assume it is water.) 2. Caleulate the mole fraction of C2HSOH in a solution that contains 46 grams of ethanol, C2H5OH, and 64 grams of methanol, CH3OH. 3. Calculate the molality of a solution that contains 51.2 g of naphthalene, CoH, in 500 ml. of carbon tetrachloride. The density of CCI, is 1.60 g/ml. 4. Consider the three statements below. Which statement(s) is(are) true? 1. Hydration is a special case of solvation in which the solvent is water. 2. The oxygen end of water molecules is attracted toward Ca2+ ions. 3. The hydrogen end of water molecules is attracted toward Cl- ions. S. Culculate the mole fraction of C2HSOH in a solution that contains 46 grams of ethanol, C2H5OH, and 64 grams of methanol, CH3OH. 6. The vapor pressure of pure water at 850C is 434 torr. What is the vapor pressure at 850C of a solution prepared from 100 ml. of water (density 1.00 g/ml.) and 150 g of diglyme, C6H1403, a nonvolatile substance? 7. Calculate by factors the following: a. The tons of limestone (CaCO3) needed for the preparation of 5 tons of lime (CaO). b. The pounds of BaCI2needed to furnish 1.51b of chlorine by an clectrolyte process, c. The weight of Oxalic acid (H2C204*2HO), in milligram to precipitate the Calcium in 0.5000 sample of Phosphate rock of the composition Ca3(PO4)2.
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