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The heat of solution of ammonium chloride (NH4Cl(s)) in water is +14.7 kJ/mol. Calculate the mass (in g) of NH4Cl(s) required to change the temperature of (1.2550x10^2) ml of water from (2.440x10^1) °C to (5.30x10^0) °C. Assume that there is no heat loss and that the heat capacity of the solution is the same as that of pure water.
Use data from the textbook. Pay attention to significant figures, keeping in mind that a temperature difference is measured during the experiment. Use scientific notation for your answer. Do not enter units.
Note: Your answer is assumed to be reduced to the highest power possible.
Phases are optional. A. 0.450 L of 0.420 M H2SO4 is mixed with 0.400 L of 0.200 M KOH. What concentration of sulfuric acid remains after neutralization?
Determine how many grams of carbon dioxide will be present in the equilibrium mixture? Considering the given equations CO(g) + H 2 O(g) CO 2 (g) + H 2 (g) if it is given =K c = 23.2
Calculate the molarity of a solution made by adding 26.1 mL of concentrated hydrochloric acid (37.3 % by mass, density 1.19 g/mL) to some water in a volumetric flask,
A 100g sample of water at 27oC is poured into a 76.2g sample of water at 89oC. What will be the final temperature.
Sulfur Dioxide reacts with oxygen to produce Sulfur trioxide in the presence of a catalyst. In an experiment carried out at 727 degrees Celsius
Synthesized a new compound one which has never beenprepared. How would you determine its mp? What precautions could take to insure that it is as accurate as possible?
Choose any two temperatures and corresponding vapor pressures in the table given, and use those values to calculate ?Hvap for dichloromethane (in kJ/mol).
Ammonia gas at 223°C and 90. atm flows into a reactor at a rate of 550. L/min. Carbon dioxide at 223°C and 47 atm flows into the reactor at a rate of 600. L/min. What mass of urea is produced per minute by this reaction assuming 100% yield?
The following statements describe some physical and chemical properties of sucrose (table sugar). Which response includes all that describe chemical properties, and none that describe physical properties?
Solutions of chymotrypsin prepared for experimental purposes are stored in a dilute solution of hydrochloric acid as a "preservative." Explain.
The activation energy for the isomerization of methyl isonitrile (see figure) is 160 kJ/mol. Calculate the fraction of methyl isonitrile molecules that has an energy of 160.0 kJ or greater at 493 K.
Draw the mechanism that illustrates the conversion of 2-chloro-2-methylbutane to 2-methyl-2-butyl isopropyl ether with 2-propanol as the nucleophile.
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