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Consider the following reaction:
CaCl2 (s) → Ca2+ (aq) + 2 Cl- (aq) ΔHo = -81.5 kJ
A 38.3 g sample of CaCl2 (MW = 110.98 g/mol) at 0.00 oC is dissolved in a beaker containing 56.5 g of ice (MW = 18.0 g/mol) at 0.00 oC in equilibrium with 101.9 g of water (MW = 18.0 g/mol) at 0.00 oC. Calculate the final temperature of the solution when the CaCl2 has dissolved assuming there is no heat lost to the surroundings, there is no change in the melting point of ice, ΔHfus = 6.02 kJ/mol, and that the solution has a specific heat capacity of 4.184 J/g oC.
If 16.0 g of methanol are reacted with an excess of PBr3, how many grams of CH3Br would be formed if there is a 25.0% yield
If a solution is made of naphthalene in heptane and has a vapor pressure of 82 torr, what is the mole fraction of naphthalene? Assume ideal solution behavior.
CaC2 + 2H2O --> C2H2 + Ca(OH)2. Using this equation, determine how many moles of CaC2 are needed to react completely with 49 g H2O.
40.0L of H2 at 850mmHg and 75.5 degrees celsius is reacted with an excess of I2. What mass of HI is formed? H2(g) + I2(g)--> 2HI(g)
alculate the volume of .7000 M NaOH required to convert all of the phosphoric acid to sodium dihydrogen phosphate. What is the concentration of the sodium dihydrogen phosphate in the final solution
Write a balanced equation for the acid-base reaction between m-nitroaniline and HCl. Using a pKa table, predict which way the equilibrium is favored.
The density of aluminum is 2.70 g/cm3 and the density of chromium, is 7.19 g/cm3. If equal masses of aluminum and chromium are transferred to equal volumes of water in separate graduated cylinders, which graduated cylinder would have the greatest ..
A constant pressure calorimeter having a heat capacity of 74.2 kJ/K is used to measure the energy released from burning a compound in excess oxygen to form CO2(g) and H2O(l).
What is the mass of H2SO4 in 520.0 cm3 sample of sulfuric acid that has a density of 1.55 g/cm3 and which consists of 55.0 % H2SO4
degress Celcius and 1 atm enters a coller in which 55% of the feed is condensed at a constant pressure. What is the temprature at the condenser outlet and explain?
considering nbspthe equilibriuma g -lt-gt 2 b g 3 c g at nbspthe temperature of 25 degree celsius. nbspdetermine
a compound gives a mass spectrum with peaks at mz 77 40 112 100 114 33 and essentially no other peaks. identify the
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