How much heat is released when 27.6 g PCl3 cools from 83.1 °C to 55.6 °C?...

Question

Question

How much heat is released when 27.6 g PCl₃ cools from 83.1 °C to 55.6 °C? (The specific heat of PCl₃ is 0.874 J/g °C).

Answer 1

Answer #1

Heat Released = m. S. DT = 27.6 x (0.87 4x (83.1-55-6) = 663.36 Joule options

Answer 2

Similar Homework Help Questions

How much heat is released from a 500 g iron rod when it cools from 125°C...

How much heat is released from a 500 g iron rod when it cools from 125°C to 20°C? The specific heat of Fe is 0.451 J/gºC
please help? How much heat is released from a 500 g iron rod when it cools...

please help? How much heat is released from a 500 g iron rod when it cools from 125°C to 20°C? The specific heat of Fe is 0.451 J/gºC O-23678J 10.6J O-32698 O 23.7J
How much heat is released when 150. g of iron cools from 525°C to 100°C? (Cp...

How much heat is released when 150. g of iron cools from 525°C to 100°C? (Cp = 0.44 J/gºC) A 50.0 g block of glass (Cp = 0.50 J/gºC) absorbs 333 joules of heat energy. How much does the temperature of the glass rise? The temperature of a silver coin (Cp = 0.24 3/9°C) falls by 353 °C as it releases 5,550 Joules of heat. What is the mass of the coin 5.

How much heat is released when a 29.0-g sample of lanthanum (specific heat = 0.164 J...

How much heat is released when a 29.0-g sample of lanthanum (specific heat = 0.164 J g-1oC-1) cools from 237.4oC to 112.9oC
How much heat is lost when a solid iron nail weighing 23.00 g cools from 675.0...

How much heat is lost when a solid iron nail weighing 23.00 g cools from 675.0 °C to 133.6 °C? (The specific heat of Fe is 0.450 J/g °C). A 563 J. B 5603 J. C 27670 J. D 2767 J. Question What mass of benzene is cooled from 83.8 °C to 77.1 °C when 167 J of energy is transferred out of the system? (The specific heat of benzene is 1.740 J/g °C). A 1.43 g. B 167 g...
350 J are released as ice ( Specific Heat = 2.1/(g°C)) cools from - 5.0 °C...

350 J are released as ice ( Specific Heat = 2.1/(g°C)) cools from - 5.0 °C to -32°C. What is the mass of ice? 6 O 0.168 O 6.28 O 4.5 x 10g 20x 104 g None of these are correct.

How much heat will be released by the system when 1.0 L of hot water, initially...

How much heat will be released by the system when 1.0 L of hot water, initially at 80 oC, cools down to 20 oC? (c = 4.18 J/K g) A) 250 kJ B) 250 J C) None. Heat will instead be absorbed D) More info is needed to answer
How much heat energy is required to convert 55.6 g of solid ethanol at -114.5 °C...

How much heat energy is required to convert 55.6 g of solid ethanol at -114.5 °C to gasesous ethanol at 165.9 °C? The molar heat of fusion of ethanol is 4.60 kJ/mol and its molar heat of vaporization is 38.56 kJ/mol. Ethanol has a normal melting point of -114.5 °C and a normal boiling point of 78.4 °C. The specific heat capacity of liquid ethanol is 2.45 J/g·°C and that of gaseous ethanol is 1.43 J/g·°C.
How much heat (in J) is evolved or absorbed when a 35.3 g sample of aluminum...

How much heat (in J) is evolved or absorbed when a 35.3 g sample of aluminum (specific heat = 0.900 J/(g K)) cools from 85.9oC to 69.5oC?

2. A substance releases 5,323 J of heat as it cools from 50.2 °C to 27.8...

2. A substance releases 5,323 J of heat as it cools from 50.2 °C to 27.8 °C. What is the specific heat (cp) of the material if there was 604.496 g of the substance? 3. When 1.2984 grams of HClO3 is neutralized with NH3, 2,107 J of heat are released. What is the molar heat of neutralization (in kJ/mole) for Hclo3?