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When 50.0 mL of 1.00 M hydrochloric acid and 50.0 mL of 1.00 M sodium hydroxide react, the temperature rises 6.7oC. Use the total solution volume, density of water, and specific heat of water to calculate the heat absorbed by the solution, qsoln, during this reaction.
a. Calculate the amount of heat released, qrxn, by this acid-base reaction.
b. Calculate the moles of hydrogen ion and hydroxide ion initially present, and the moles of water produced in this reaction.
Describe how you would make 500 mL of 0.150 M Na2SO4 given 1 kg of Na2SO4, a distilled water supply, a balance, anf a 500-mL volumetric flask.
Describe the preparation of 200 mL of 1.00% (w/v) aqueous CuSO4, from a 0.218 M CuSO4 solution.
The mass of iron produced by the reaction of 7.00 kg of Fe2O3 and 3.00 kg of CO is 3.55 kg. What is the percent yield? (Atomic weights: Fe = 55.85, O = 16.00, C = 12.01)
The standard free energy change is -33.41 kJ/mol for the formation (delta G formation) of AgNO3(s) from elements at 25 degrees celsius. What is the equilibrium constant for the reaction? (R = 8.314 J/K mol)
The Ksp of CaSO4 is 4.93× 10-5. Calculate the solubility (in g/L) of CaSO4(s) in 0.300 M Na2SO4(aq) at 25 °C.
charles flew the balloon for fifteen miles and stayed in the air for a total flight time of 45 mins. the balloon was
Estimate the vapor pressure at 45 degrees C using the Clausius-Clapeyron equation and the two given data points.
1.75 moles of an ideal gas, for which Cv,m =3R/2, initially at 32.0 C and 2.50*10^6 pa undergoes a two-stage transformation. For each of the following states described in the following list, calculate the final pressure, as well as q, w, ?U, and ?..
Dry ice (solid ) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of gunpowder are placed in the hole,
Ammonia burns in pure oxygen and reaction produces nitrogen and water. What is the amount of Nitrogen produced from 45.0 g NH3?
When 2 mol of Potassium Chlorate crystals decompose to Potassium Chloride crystals and Oxygen gas at a constant temperature and pressure
What is the molar solubility of silver bromide in a solution that also contains 0.050M Ag+ ions at 25 °C? The Ksp of AgBr is 5.4 × 10-13.
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