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Heating aluminum and changes in combustion

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1. Aluminum has a specific heat of 0.880 J/g-deg. How many joules
are needed to heat 155g of Al from 20.0oC to 75.0oC
2. Characterize each of the following as saturated, unsaturated, or
unable to exist.Give reasons for your answers.
A. C5H12 B. C3H2 C. C8H20 D. C2H2 E. CH3
3. The ∆H of combustion of C2H6 is 1541 kJ mol. How many kJ of
energy result when 575g of C2H6 are combusted?
4. Why is it that a solution of NaCl in water conducts electricity, but
A solution of sucrose in water does not conduct electricity?
5. Why does a 1 molal solution of ZnCl2 in water have a lower
freezing temperature than a 1 molal solution of NaCl in water ?

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heat realsed by combustion of ethyl ether

1. In earlier times, ethyl ether was commonly used as an anesthetic. It is, however, highly flammable. When 5.0 mL of ethyl ether C4H10 (l), (d=0.714 g/mL) is burned in a bomb calorimeter, the temperature rises from 23.5°C to 39.7. The calorimeter heat capacity is 10.24 kJ/°C. What is heat released when 5.00 mL ethyl ether is burned? (Round your answer to the nearest whole number)

2. The specific heat of aluminum is 0.902 J/g?°C. How much heat is absorbed by an aluminum pie tin with a mass of 473 g to raise its temperature from room temperature (23°C) to oven temperature (375°F)? F = °C x 1.8 + 32 (Give your answer in kJ and round to the nearest tenths)

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