I need help w/ # 8,9,10,11,12, & 13 thanks 8. How much heat (in joules) must be added to change 20.0 g of H2O(s) at -10°C to steam at 110°C? The specific heat of H2O(s) is 2.09 J/g°C; of H2O9(l) is 4.184 J/g°C; and H2O(g) is 1.84 J/g°C. The heat of fusion of water is 334.7 J/g and the heat of vaporization of water is 2259.4 J/g.9. 50.0 mL of a solution of HCl is combined with 100.0 mL of 1.15 M NaOH in a calorimeter. The reaction mixture is initially at 22.4°C and the final temperature after reaction is 31.2°C. What is the molarity of the HCl solution?[You may assume that there is an excess of base(so all of the HCl has reacted), that the specific heat of the reaction mixture is 0.96 cal/g°C, and that the density of the reaction mixture is 1.02g/mL. The heat of neutralization of HCl and NaOH is 13.6 kcal/mol.]10. What would be the final temperature if 55.0g of H2O at 30°C is added to 45.0g of H20 at 95°C?(Assume no loss of heat to the surroundings.11. 100.g of Cu at 100°C is added to 150.g of H2O at 10.0°C. If the specific heat of copper is 0.389 J/g°C, what will be the final temperature of the water and copper mixture?12. Calculate the amount of coke,(carbon) needed to be burned in order to heat 500.kg of water from 20°C to 50°C. The heat of combustion of coke is 36.15 kJ/g.13. From the table of standard heats of formation, ΔHf°, values, calculate ΔH° for the combustion of ethanol according to the reaction:C2H5OH(l) + 3 O2(g) -> 2 CO2(g) + 3 H2O(l)
I need help w/ # 8,9,10,11,12, & 13 thanks
8. How much heat (in joules) must be added to change 20.0 g of H2O(s) at -10°C to steam at 110°C? The specific heat of H2O(s) is 2.09 J/g°C; of H2O9(l) is 4.184 J/g°C; and H2O(g) is 1.84 J/g°C. The heat of fusion of water is 334.7 J/g and the heat of vaporization of water is 2259.4 J/g.
9. 50.0 mL of a solution of HCl is combined with 100.0 mL of 1.15 M NaOH in a calorimeter. The reaction mixture is initially at 22.4°C and the final temperature after reaction is 31.2°C. What is the molarity of the HCl solution?[You may assume that there is an excess of base(so all of the HCl has reacted), that the specific heat of the reaction mixture is 0.96 cal/g°C, and that the density of the reaction mixture is 1.02g/mL. The heat of neutralization of HCl and NaOH is 13.6 kcal/mol.]
10. What would be the final temperature if 55.0g of H2O at 30°C is added to 45.0g of H20 at 95°C?(Assume no loss of heat to the surroundings.
11. 100.g of Cu at 100°C is added to 150.g of H2O at 10.0°C. If the specific heat of copper is 0.389 J/g°C, what will be the final temperature of the water and copper mixture?
12. Calculate the amount of coke,(carbon) needed to be burned in order to heat 500.kg of water from 20°C to 50°C. The heat of combustion of coke is 36.15 kJ/g.
13. From the table of standard heats of formation, ΔHf°, values, calculate ΔH° for the combustion of ethanol according to the reaction:
C2H5OH(l) + 3 O2(g) -> 2 CO2(g) + 3 H2O(l)
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