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A cube of solid benzene (C6H6) at its melting point and weighing 8.37 g is placed in 19.3 g of water at 38.8 °C. Given that the heat of fusion of benzene is 9.92 kJ/mol, to what temperature will the water have cooled by the time all of the benzene has melted. You can assume that the benzene remains at its melting point.
For my class data from reading a value off the buret with water inside my class results are 11.21, 11.23, 11.23, 11.23, 11.23, 11.24, 11.24, 11.25, 11.25, 11.25, 11.25, 11.25, 11.26, 11.28, 11.28, 11.29, 11.30 from increasing order.
If this NH4Cl solution is assumed to be ideal and is completely dissociated into ions, calculate the vapor pressure of this solution at 29.0 °C. (The vapor pressure of pure water at 29 °C is 30.0 mm Hg.)
Calculate the concentration of CrO4^2- in a solution that is 0.0375M in chromic acid and 0.150M HCL. (Chromic acid is H2CrO4, a diprotic acid, Ka1= 1.80x10^-1, Ka2=3.20x10^-7 & Kw=1.00x10^-14).
Caffeine, C8H10N4O2, is a stimulant found in tea and coffee. A sample of the substance was dissolved in 41.5 g of chloroform, CHCl3, to give a 0.0940 m solution.
Determine the limiting reactant in HCl + NaOH = NaCl + H2O given 2 moles of HCl and 2.5 moles of NaOH
25.00 mL of a tap water sample is titrated with5.00x10-3 M EDTA solution. 6.25 mL are required to reachthe endpoint. What is the hardness of the water in ppm
Silver chloride, AgCl, is a sparingly soluble solid. Answer the following questions about a saturated solution prepared by placing solid silver chloride in a 3.49 10-5 M NaCl(aq) solution
Calculate the E°cell values for the galvanic cell in Q1. IO3- (aq) + Fe2+ (aq) D Fe3+ (aq) + I2 (aq) 4. Calculate DG° at 25 °C for the reaction
Its thermal decomposition can be represented by: 2Al2O3 (s) = 4Al (s) + 3O2 (g) deltaHrxn = 1676 kJ. If aluminum is produced this way, how many grams of aluminum can be formed when 1.000 x 10^6 J of heat is transferred
Of the four general types of solids, which one(s) a. are generally low-boiling. b. are ductile and malleable. c. are generally soluble in non polar solvents
a solution of ethanol c2h5oh in water is prepared by dissolving 72.0 ml of ethanol density 0.79 gcm3 in enough water
A 72.0 mL volume of 0.25 Moles HBr is titrated with 0.50 Moles KOH. Calculate the pH after addition of 36.0 mL of KOH
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