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If 975g of copper is heated from 20 degrees C to 80 degrees C what amount of heat is absorbed?
Calculate the number of grams of propane (C3H8) required to heat all of the water in a 50-gallon hot-water tank from 23.4 degrees C to 65.0 degrees C
A Cu/Cu2+ concentration cell has a voltage of 0.24 V at 25 Celcius. The concentration of Cu2+ in one of the half cells is 1.5 * 10-3 M. what is the concentration of Cu2+ in the other half cell?
has a rate constant k= 1.10 x10^-14 at 470 degrees C and an activation energy of 264 kJ/mol. What is the temperture of the reaction when the rate is constant is equal to 4.36 x 10^-3s^-1?
reversible expansion from Pinitial=25.0 bar and Vinitial=4.50L to Pfinal=4.50 bar, (2) a single step irreversible expansion against a constant external pressure of 4.50 bar
What mass of melamine will be obtained from 168 kg of urea if the yield of the overall reaction is 79.0%
What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M methylamine, CH3NH2, with 25.00 mL of 0.10 M methylammonium chloride, CH3NH3Cl.
How many mole of hydrogen gas can be liberated from 85.5 moles of magnesium hydride if the process operates at 80% efficiency
A 4.10 g nugget of pure gold absorbed 292 J of heat. The initial temperature was 28.0°C. What was the final temperature.
What is the pH of a buffer solution if 100.0 mL of the solution is 0.15 M with respect to acetic acid and contains 1.56 g of sodium acetate, CH3COONa.
an inert gas has a volume of 941 ml at temperature 28 oC and pressure 675 Torr. What volume does the gas occupy at standard ambient temperature and pressure (SATP)?
Limestone (CaCO3) is used to remove acidic pollutants from smokestack flue gases. It is heated to form lime (CaO), which reacts with sulfur dioxide to form calcium sulfite
Calculating concentration in equilibrium, At pH 6.00 and pE 2.60, what is the concentration of Fe2+ (mol/L) in equilibrium with Fe(OH)3?
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