A- 20.0g block of zinc (s=0.390J/g*C) was heated to 100 C and then placed in 75.0mL...
A- 20.0g block of zinc (s=0.390J/g*C) was heated to 100 C and then placed in 75.0mL of water (s=4.184J/g*C) in the coffee cup, and the temperature of the water increased from 22.5 C to 24.6 C. calculate the heat capacity of the coffee cup.
B- 5.00g of solid NaOH was placed in 75.0mL of water at 23.8 C in the same coffee cup, and the temperature of the water increased to 39.7 C. calculate the enthalpy of solution of sodium hydroxide.
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A- 20.0g block of zinc (s=0.390J/g*C) was heated to 100 C and
then placed in 75.0mL...
3) Titanium dioxide is synthesized in the laboratory by hydrolysis, using the following reaction:...
3) Titanium dioxide is synthesized in the laboratory by hydrolysis, using the following reaction: н,--763 187.6 -945 -92.31 What change in internal energy would occur at 298K if 1 mol of TiC4) were added to H20(0) and all of the HCI evolved as gas? 4) Calculate the enthalpy of formation of acetylene: Given: 2C2H2lg)+502)4CO2)2H2 2599 kJ 2H2 O 2H20 393.5 k 285.8 kJ 5) The following question refers to the enthalpy of combustion of styrene monomer, CHa There should be...
An aluminium block is heated to 100 °C and then placed immediately in 100 g of...
An aluminium block is heated to 100 °C and then placed immediately in 100 g of water which is initially at a temperature of 25.0 °C in a coffee cup calorimeter. Once the system reaches thermal equilibrium, the temperature of the water that surrounds the block is 28.0 °C. Calculate the mass of the aluminium block. The specific heat capacity of Al is 0.900 J g^–1 K^–1 and for H2O is 4.184 J g^–1 K^–1
A 69.62 g block of lead is heated to 99.48ºC and is placed into a coffee-cup...
A 69.62 g block of lead is heated to 99.48ºC and is placed into a coffee-cup calorimeter filled with 75.67 g of water initially at 22.07ºC. The final temperature was measured as 24.58ºC. The calorimeter heat capacity is 1.860 J/ºC and the specific heat of water is 4.184 J/ g ºC. Based on this information, what is the specific heat of lead? a.0.1473 J/ g ºC b.0.1481 J/ g ºC c.0.1523 J/ g ºC d.0.1533 J/ g ºC e.0.2109 J/...
A 16.15 g sample of metal heated in a test tube submerged in 100.00 °C water....
A 16.15 g sample of metal heated in a test tube submerged in 100.00 °C water. It was then placed directly into a coffee cup calorimeter holding 49.23 g of water at 22.12 °C. The temperature of the water increased to 25.11 C, determine the specific heat capacity of the metal
UL. HAL IVCI U IS DIUROFIN S 2. (15 pts) A 83.5 g sample of a metal alloy is heated to 88.1°C and it is then placed...
UL. HAL IVCI U IS DIUROFIN S 2. (15 pts) A 83.5 g sample of a metal alloy is heated to 88.1°C and it is then placed in a coffee-cup calorimeter containing 30.0 g water at 15.0°C. The final temperature of the metal + water is 25.3 "C. Calculate the specific heat of metal alloy, in J/g °C), assuming no heat escapes to the surroundings or is transferred to the calorimeter. The specific heat of water is 4.184 J/g °C)....
2. When a 6.50 g sample of solid sodium hydroxide dissolves in 100.0 g of water...
2. When a 6.50 g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter (figure 5.18 in your textbook), the temperature rises from 21.6 to 37.8 C. a. Calculate the quantity of heat (in kJ) released in the reaction (the dissolving of NaOH). b. Using the result from part a, calculate the enthalpy of the reaction for the solution of NaOH in kJ/mol NaOH.
> PROBLEM-SOLVING CLASS ACTIVITY 3 A 26.5 g piece of lead, heated to 90.0°C, is dropped...
> PROBLEM-SOLVING CLASS ACTIVITY 3 A 26.5 g piece of lead, heated to 90.0°C, is dropped into a coffee-cup calorimeter containing 100,0 mL of water at 22.5°C. The final temperature of the metal and the water is 23.2°C. What is the specific heat of lead? The density of water is 1.00 g/mL.
Determination of Specific Heat of Metals: (8 points) Ametal rod with a mass of 50.0 g was heated to 100°C in boilin...
Determination of Specific Heat of Metals: (8 points) Ametal rod with a mass of 50.0 g was heated to 100°C in boiling water for 10 minutes and then placed into a cup of water containing 40 mL of water at 22.5 C. The temperature increased to a maximum of 34.4'C. The specific heat of water (Cp) is 4.184 J/g K and q = mx CP X AT a). How much heat (in Joules) was gained by the water? b). How...
An aluminum block of mass 500 g is heated to a temperature of 150 C and...
An aluminum block of mass 500 g is heated to a temperature of 150 C and droped into a cup of water of mass 1500 g. The heat capacity of the cup is 100 cal/K. Assuming that the initial temperature of the cup and water is 20 C, find the final temperature of the system after it reaches thermal equilibrium.
QUESTION 2 a 17.9 g sample of an unknown metal is heated to 63.1 °C is...
QUESTION 2 a 17.9 g sample of an unknown metal is heated to 63.1 °C is placed in 18.5 g of water in a coffee cup calorimeter causing the temperature of the water to raise from 23.0°C to 25.3 °C. Calculate the heat released by the metal. The specific heat of the metal is 0.655J/g °C.x
3) Titanium dioxide is synthesized in the laboratory by hydrolysis, using the following reaction: н,--763 187.6 -945 -92.31 What change in internal energy would occur at 298K if 1 mol of TiC4) were added to H20(0) and all of the HCI evolved as gas? 4) Calculate the enthalpy of formation of acetylene: Given: 2C2H2lg)+502)4CO2)2H2 2599 kJ 2H2 O 2H20 393.5 k 285.8 kJ 5) The following question refers to the enthalpy of combustion of styrene monomer, CHa There should be...
A 16.15 g sample of metal heated in a test tube submerged in 100.00 °C water. It was then placed directly into a coffee cup calorimeter holding 49.23 g of water at 22.12 °C. The temperature of the water increased to 25.11 C, determine the specific heat capacity of the metal
UL. HAL IVCI U IS DIUROFIN S 2. (15 pts) A 83.5 g sample of a metal alloy is heated to 88.1°C and it is then placed in a coffee-cup calorimeter containing 30.0 g water at 15.0°C. The final temperature of the metal + water is 25.3 "C. Calculate the specific heat of metal alloy, in J/g °C), assuming no heat escapes to the surroundings or is transferred to the calorimeter. The specific heat of water is 4.184 J/g °C)....
2. When a 6.50 g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter (figure 5.18 in your textbook), the temperature rises from 21.6 to 37.8 C. a. Calculate the quantity of heat (in kJ) released in the reaction (the dissolving of NaOH). b. Using the result from part a, calculate the enthalpy of the reaction for the solution of NaOH in kJ/mol NaOH.
> PROBLEM-SOLVING CLASS ACTIVITY 3 A 26.5 g piece of lead, heated to 90.0°C, is dropped into a coffee-cup calorimeter containing 100,0 mL of water at 22.5°C. The final temperature of the metal and the water is 23.2°C. What is the specific heat of lead? The density of water is 1.00 g/mL.
Determination of Specific Heat of Metals: (8 points) Ametal rod with a mass of 50.0 g was heated to 100°C in boiling water for 10 minutes and then placed into a cup of water containing 40 mL of water at 22.5 C. The temperature increased to a maximum of 34.4'C. The specific heat of water (Cp) is 4.184 J/g K and q = mx CP X AT a). How much heat (in Joules) was gained by the water? b). How...
QUESTION 2 a 17.9 g sample of an unknown metal is heated to 63.1 °C is placed in 18.5 g of water in a coffee cup calorimeter causing the temperature of the water to raise from 23.0°C to 25.3 °C. Calculate the heat released by the metal. The specific heat of the metal is 0.655J/g °C.x
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