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Calculate the heat energy released when 10.3 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for Mercury at 1 atm: Heat capacity: 28.0 J/(mol*K) Melting Point: 234.32 K Enthalpy of fusion: 2.29 kJ/mol 2. At 1 atm, how much energy is required to heat 55.0 g of H2O(s) at -10.0 °C to H2O(g) at 119.0 °C? 3. Two 20.0-g ice cubes at -16.0 °C are placed into 205 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts. Heat capacity of H2O (s): 37.7 J/(mol*K) Heat capacity of H2O (l): 75.3 J/(mol*K) Enthalpy of fusion H2O: 6.01 kJ/mol
The best means of personal protection from radiation for emergency responders is the implementation of three basic principles: time, distance and shielding.
A researcher plans to compare two treatment conditions by measuring one sample in treatment 1 and a second sample in treatment 2. The researcher will then compare the scores for the two treatments.
What is the percent yield of a reaction in which 222 g phosphorus trichloride reacts with excess water to form 141 g HCl and aqueous phosphorus acid (H3PO3)?
Write a chemical equation describing the condensation process for CO2 and a chemical equation describing the freezing process for CO2. For each process discuss the change in enthalpy and entropy that occurs.
A 4.40 g piece of solid CO2( dry ice) is allowed to vaporize(change to gas) in a ballon. The final volume of balloon is 1.00 L at 300L. What is the pressure of the gas?
Methane and hydrogen sulfide form when 36g H2 reacts wih carbon disulfide, calculate the percent yield if the actual yield of CH4 is 69.8g.
A column of water exerts, a pressure of 100pa and a force of 2.0 N. What is the cross sectional area of the column?
What is the difference between the voltage produced by a cell and the current produced by a cell?
Mg3N2(s) + H2O(l) → Mg(OH)2(s) + NH3(g) If this process is 82% efficient, what mass of ammonia can be prepared from 22.0 kg magnesium nitride.
How many grams of IO2F are needed to react completely with 150.0 g of BrF3? 3IO2F(s) + 4BrF3(l) → 3IF5(l) + 2Br2(l) + 3O2(g)
A volume of 10.0 mL of a .00300 M solution of Cl- ions are reacted with .500 M solution of AgNO3-. What is the maximum mass of AgCl that precipitates in grams.
Consider the cell described below: Al/Al3+ (1.00M)//Pb2+ (1.00M)/Pb Calculate the cell potential after the reaction has operated long enough for the [Al3+] to have changed by .60 mol/L. Assume T=25 C
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