Help would be very appreciated. 1. T he goose has a mass of 16.8 lb and is flyin

Question

Help would be very appreciated.

1. The goose has a mass of 16.8 lb and is flying at 9.20 miles/h. What is the kinetic energy of the goose in joules? (Enter your answer numerically in joules)

2. What is ?Hrxn? for the following chemical reaction?CO2(g)+2KOH(s)?H2O(g)+K2CO3(s). (Express your answer numerically, in kJ)

3. A calorimeter contains 19.0mL of water at 11.0C . When 2.10g of X (a substance with a molar mass of 62.0g/mol ) is added, it dissolves via the reaction:

X(s)+H2O(l)?X(aq)

and the temperature of the solution increases to 28.5C. Calculate the enthalpy change, ?H, for this reaction per mole of X. (Assume that the specific heat of the resulting solution is equal to that of water [4.18 J/(g?C)], that density of water is 1.00 g/mL, and that no heat is lost to the calorimeter itself, nor to the surroundings.) Express the change in enthalpy in kilojoules per mole to three significant figures.

4. Calculate the heat transferred in kJ when converting 15.00 g steam at 111.0C to ice at -14.0C. The specific heat of steam is 2.1 J/g-C, the specific heat of liquid H2O is 4.18 J/g-C, and the specific heat of ice is 2.0 J/g-C. (Heat of vaporization is 2,256 J/g and heat of fusion is 333 J/g. (Don't forget that exothermic processes have a negative value, and endothermic processes have a positive value.))

5. Calculate the enthalpy change, ?H, for the process in which 48.8g of water is converted from liquid at 7.9C to vapor at 25.0C .For water, ?Hvap = 44.0kJ/mol at 25.0C and s = 4.18J/(g?C) for H2O(l). (Express your answer numerically in kilojoules.)

6. How many grams of ice at -25.0C can be completely converted to liquid at 21.7C if the available heat for this process is 4.88

Explanation / Answer

1. KE = 0.5*16.8*0.45*0.44^2 = 0.731J

2.

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