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The hydrocarbon benzene C_6_H_6_ boils at 80.1 C. How much energy is required to heat a 1.00 kg of this liquid from 20 C to the boiling point and then changes the liquid completely to a vapor at that temperature?
The specific heat capacity of the liquid C_6_H_6_ is 1.74 Jg^-1C^-1 and the enthalpy is 395 J/g Report results in joules.
a 0.525-g sample of a compound is dissolved in enough water to form 100.0 ml of solution. this solution has an osmotic
For the reaction 2NO(g)+O2(g)---> 2NO2(g).....delta G=-77.4kJ and delta S=-146.5 J/K at 251 K and 1 atm A) this reaction is (reactant, product) favored under standard conditions at 251 K B) the standard enthalpy change for delta H for the reaction..
Calculate the standard enthalpy. of formation of solid Mg(OH)2 using the following thermochemical info: Mg (s) + O2 ---> 2MgO(s) delta H = -1203.6 kj Mg(OH)2 (s) ----> MgO (s) + H2O (l) delta H = 37.1 kj 2H2 (g) + O2 (g) ----> 2H2O(l) delta H = -5..
A 25:75 mixture of acetone:toluene is heated to 70 C at a pressure of 760 mmHg. What is the total vapor pressure of the system? Is the system a liquid below boiling, at boiling, or a gas?
Do the pH values for the more dilute solutions approach the pH of the distilled water. What would we expect to happen if we continued to dilute these samples even further
What is the ph of a solution that results from diluting .30 mol acetic acid and .20 mol sodium acetate with water to a volume
you have dissolved 0.298 g of soda ash into 80 mL of deionized water. It took 19.8 mL of 0.0998 M HCl to titrate the solution to the second equivalence point. What is the percent Na2CO3 in the soda ash?
What is the hydronium-ion concentration in a 0.025 M solution of carbonic acid, H2CO3? For carbonic acid,
55.0 ml of 0.10 m hclaq is mixed with 55.0 ml of 0.10 m naoh 9aq in a coffee cup calorimeter. both solutions are
Combustion of natural gas (primarily methane) occurs in most household heaters. The heat given off in this reaction is used to raise the temperature of the air in the house.
How would you prepare a 25.0% water in ethyl alcohol solution using 100.0 ml of ethyl alcohol (the density of alcohol is 0.7893 g/ml)
a gas company charges 1.30 for 15.0 cubic feet of natural gas. a convert this rate to dollars per liter of gas. b if it
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