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Assume you dissolve 2.56g of malic acid, C4H605 in half a liter of water (500g). Calculate the molarity, molality, mole fraction, and weight percentage of acid in the solution.You want to prepare a solution that is 0.200m in Na2CO3. How many grams of the salt must you add to 125g of water? What is the mole fraction of Na2CO3 in the resulting solution?Concentrated sulfuric acid has a density of 1.84g/cm cubed and is 95.0% by weight H2SO4. What is the molality of this acid? What is its molarity?Which pairs of liquids will be miscible? a.)H20 and CH3CH2CH2CH3 b.)C6H6 (benzene) and CCl4 c.)H2O and CH3CO2HWhat is the boiling point of a solutionn composed of 15.0g of CHCl3 and 0.515g of the nonvolatile solute acenaphthalene, (Cl2H10) a component of coal tar? Kbpof CHCL3 is + 3.63 degrees C/m.
Arrange the following solutions in order of increasing boiling point. :a.)0.10m KCL b.).10m sugar c.)0.080 m MgCl2Phenanthrene, Cl4H10, is an aeromatic hydrocarbon. If you dissolve some phenathrene in 50.0g of benzene, the boiling point of the solution is 80.51 degrees celcius. How many grams of the hydrocarbon must have been dissolved?A mixture of ethanol (C2H5OH) and water has a freezing point of -16.0 degrees celcius. a.)what is the molality of the alcohol? b.)what is the weight percent of alcohol in the solution?List the following aqueous solutions in order of increasing melting point a.)0.10m sugar b.)0.1m NaCl c. 0.08m CaCl2 d.)0.04m Na2SO4
How many grams of ethylene glycol, HOCH2CH2OH, must be added to 5.50kg of water to lower the freezing point of the water from 0.0 degrees celcius to -10.0 degrees celcius?An aqueous solution contains 0.180g of an unknown, nonionic solute in 50.0g of water. The solution freezes at -0.040 degrees celcius. What is the molar mass of the solute?
use the bond dissociation energies of h2 435 kjmol and of y typical carbon-carbon bond 347 kjmol to decide which bond
A recessive genetic condition can prevent some people from expressing the carbohydrate core that is typical for the O blood type. As a result of this condition, two parents with A, B, or AB blood types who are carriers of this recessive condition ..
Consider the crystalization of sulfanilamide from 95% ethyl alcohol. If impure sulfanilamide is dissolved in the minimum amount of 95% ethyl alcohol at 40 degrees celcius rather than 78 degrees celcius
the most common source of copper rm cu is the mineral chalcopyrite rm cufes2. how many kilograms of chalcopyrite must
hyperchem puts it in one of the two degenerate homo orbitals. display these two orbitals and paste them into your
When 7.00 moles of gas A and 3.00 moles of gas B are combined, the total pressure exerted by the gas mixture is 1.0 atm. What is the partial pressure exerted by gas A in this mixture?
On a more polar column, nonpolar compounds will have shorter retention times. b) On a more polar column, all molecules will have longer retention times
Which of the following is an example of an ionic crystalline solid? Choose one answer. a. calcite, CaCO3 b. fluorite, CaF2 c. iron pyrite, FeS2 d. silver chloride, AgCl e. all of these
If the tank was actually pressurized such that the top surface of milk was at a pressure of 123.0 kPa, what was the actual height of milk in the tank?
A solution is prepared by dissolving 297 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
What observed rotation is expected when a 1.36 M solution of (R)-2-butanol is mixed with an equal volume of a 0.680 M solution of racemic 2-butanol, and the resulting solution is analyzed in a sample container that is 1 dm long?
Fortunately, you can narrow the search because the PVC piping comes from unique vendors each with their unique degrees of polymerization. By detailed measurement, you determine that the PVC molecular non-extended (i.e., coiled) length is 7 nm. Wha..
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