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The acid-base neutralization reaction of solid ammonium chloride with solid barium hydroxide form barium chloride, ammonia, and water. If 9.8g of solid ammonium chloride are mixed with 42.2g of solid barium hydroxide, how many grams of solid barium chloride are formed?
Lakes that have been acidified by acid rain can be neutralized by liming, the addition of limestone (CaCO3 ). How much limestone in kilograms is required to completely neutralize a 3.8 x109 lake with a pH of 5.5.
Fuel cells combine H2(g) and O2(g) to produce H2O(g). What is the crossover temperature for this reaction at standard state
Heptane (C7H16) and octane (C8H18) are constituents of gasoline. At 80.0 ?C, the vapor pressure of heptane is 428 mmHg and the vapor pressure of octane is 175 mmHg.
the methanol was evaporated and the experiment was completed. The melting point of the aspirin was found to be 110-115 degrees Celcius. Explain why the melting point was low and why the melting range was so wide.
The vapor pressure of benzene,C6H6 is 40.1mmHg at 7.6C. what is its vapor pressure at 60.7C? The molar heat of vapotization for benzene is 31.0kg/mol
Calculate the enthalpy (in kJ/mole) for this reaction. Assume that the resulting solution has a specific heat of 4.18 J/g degree C.
What substances are present after the reaction is over? (Hint: Write a balanced chemical equation for the reaction first.) How many grams of water are formed?
a piston-cylinder contains h2o at 15 bar and a temperature of 400 degc. the water is then cooled at constant pressure
For a certain chemical reaction, DH is
Calculate the pH of the resulting solution if 22.0 mL of 0.220 M HCl(aq) is added to (a) 32.0 mL of 0.220 M NaOH(aq). (b) 12.0 mL of 0.320 M NaOH(aq).
Find the number of moles of the indicated species in (a) 6.84 g of B2O3 (b) 296 mg of Na2B4O7 10 H20 (c) 8.75 g of Mn3O4 (d) 67.4 mg of CaC2O4
A solution of 120 mL of 0.150 M KOH is mixed with a solution of 260 mL of 0.200 M NiSO4. How many grams of the precipitate can be formed?
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