1)calculate the specific heat of 87.0 grams of a substance that when it absorbs 9,370 joules...
1)calculate the specific heat of 87.0 grams of a substance that when it absorbs 9,370 joules of heat, it increases in temperature from 15.0 degrees c to 75.0 degrees c 2) calculate the energy needed to heat 127.0 grams of water from 25 degrees c to 95 degrees c. assume that the specific heat for liquid water is 4.18 j/g degress c
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1)calculate the specific heat of 87.0 grams of a substance that
when it absorbs 9,370 joules...
Energy/Specific Heat (q=mcAT) 1. Determine the energy, in Joules, needed to increase the temperature of 20.00...
Energy/Specific Heat (q=mcAT) 1. Determine the energy, in Joules, needed to increase the temperature of 20.00 g of water from 300.0 K to 365.0 K. (Remember that one degree of Celsius contains the same amount of energy as one Kelvin.) 2. Determine the energy, in Joules, released as 1.00 kilogram of water cools from 72.0°C to 30.0°C. 3. 25.0 g of mercury are heated from 25.0° C to 155.0°C and absorbs 455 joules of heat in the process. Calculate the...
Calculate the heat required in Joules to convert 18.0 grams of water ice at a temperature...
Calculate the heat required in Joules to convert 18.0 grams of water ice at a temperature of -20° C to liquid water at the normal boiling point of water. Given: -specific heat of ice = 2.09 J/g°C -specific heat of liquid water = 4.184 J/g°C -specific heat of water vapor = 2.03 J/g°C -molar heat of fusion of water = 6.02 kJ/mol -molar heat of vaporization of water = 40.7 kJ/mol
1. Calculate the heat required to melt 5.4 g of naphthalene, C.H. AH, -18.8kJ /mol 2....
1. Calculate the heat required to melt 5.4 g of naphthalene, C.H. AH, -18.8kJ /mol 2. Ice at -10.0° C is combined with 50.0g of water at 75.0°C. Calculate the grams of ice present initially if the entire mixture comes to a final temperature of 25.0°C after the ice melts. Specific heat of water is 4.18 J/gºC, AH, = 334J/g Specific heat of water is 4.18 J/gºC, AH, = 3341/8 2. Consider the phase diagram of compound Z below: a....
The following table provides the specific heat and enthalpy changes for water and ice Substance Specific...
The following table provides the specific heat and enthalpy changes for water and ice Substance Specific heat [J/(g⋅∘C)][J/(g⋅∘C)] ΔHΔH (kJ/mol)(kJ/mol) water 4.18 44.0 ice 2.01 6.01 a) Calculate the enthalpy change, ΔHΔHDeltaH, for the process in which 42.3 gg of water is converted from liquid at 3.2 ∘C∘C to vapor at 25.0 ∘C∘C . For water, ΔHvapΔHvapH = 44.0 kJ/molkJ/mol at 25.0 ∘C∘C and CsCsC_s = 4.18 J/(g⋅∘C) J/(g⋅∘C) for H2O(l)H2O(l). Express your answer to three significant figures and include the...
LAB 10 PRE LAB WORKSHEET Specific Heat Capacity (C) The energy transferred as heat that is...
LAB 10 PRE LAB WORKSHEET Specific Heat Capacity (C) The energy transferred as heat that is required to raise the temperature of 1 gram of a substance by 1 kelvin. q= - m x Cp X AT q=heat lost or gained, m= mass of solution (grams) Cp = the Specific Heat Capacity of a compound (J/g x °C)) AT = Tfinal-Tinitial AHsolution = 9 moles of salt 1. If 1.25 g of ammonium nitrate (NH4NO3) is dissolved in 25.0 mL...
9:484 Back Specific Heat Chpt3.docx Heat Capacity 1) How many Joules of energy are required to...
9:484 Back Specific Heat Chpt3.docx Heat Capacity 1) How many Joules of energy are required to raise 15g of aluminum from 30 C to 100°C? Given the heat capacity of Aluminum is 0.903 Jig C 2) If 6093 cal of energy is added to some pure substance. If the temperature went from 10°C to 50°C, how many grams of the substance was present. Given the of the substance is 2.45cal/g C 3) If 4x10* J of energy is added to...
Question 3 (1 point) Calculate the specific heat for the element Madeupium if the addition of...
Question 3 (1 point) Calculate the specific heat for the element Madeupium if the addition of 118.3J increases the temperature of a 13.8 g sample by 17.2 K A) 94.9 J/g°C B) 148 J/g°C OC) 0.498 J/g°C D) 2.01 J/g°C Question 4 (1 point) 0.839 g of an unknown organic liquid was burned in a bomb calorimeter, heating the 395 grams of water by 11.1°C. Assuming the calorimeter absorbs a negligible amount of heat, calculate the heat added to the...
The temperature of an object increases by 48.3 °C when it absorbs 3701 J of heat. Calculate the heat capacity of the ob...
The temperature of an object increases by 48.3 °C when it absorbs 3701 J of heat. Calculate the heat capacity of the object. C = 0.240 The mass of the object is 319 g. Use the table of specific heat values to identify the composition of the object. Substance gold silver Specific heat (J/(g · °C)) 0.129 0.240 0.444 0.900 iron aluminum
solve The heat energy associated with a change in temperature that does not involve a change...
solve
The heat energy associated with a change in temperature that does not involve a change in phase is given by -msAT where q is heat in joules, mis mass in grams, s is specific heat in joules per gram-degree Celsius, J/(g·°C). and AT is the temperature change in degrees Celsius. The heat energy associated with a change in phase at constant temperature is given by where q is heat in joules, m is mass in grams, and ? H...
In the laboratory a student finds that it takes 183 Joules to increase the temperature of...
In the laboratory a student finds that it takes 183 Joules to increase the temperature of 13.0 grams of solid magnesium from 24.6 to 39.4 degrees Celsius. i The specific heat of magnesium calculated from her data is J/gºC. In the laboratory a student finds that it takes 595 Joules to increase the temperature of 11.2 grams of liquid water from 21.6 to 35.3 degrees Celsius. The specific heat of water calculated from her data is J/gºC.
Energy/Specific Heat (q=mcAT) 1. Determine the energy, in Joules, needed to increase the temperature of 20.00 g of water from 300.0 K to 365.0 K. (Remember that one degree of Celsius contains the same amount of energy as one Kelvin.) 2. Determine the energy, in Joules, released as 1.00 kilogram of water cools from 72.0°C to 30.0°C. 3. 25.0 g of mercury are heated from 25.0° C to 155.0°C and absorbs 455 joules of heat in the process. Calculate the...
1. Calculate the heat required to melt 5.4 g of naphthalene, C.H. AH, -18.8kJ /mol 2. Ice at -10.0° C is combined with 50.0g of water at 75.0°C. Calculate the grams of ice present initially if the entire mixture comes to a final temperature of 25.0°C after the ice melts. Specific heat of water is 4.18 J/gºC, AH, = 334J/g Specific heat of water is 4.18 J/gºC, AH, = 3341/8 2. Consider the phase diagram of compound Z below: a....
LAB 10 PRE LAB WORKSHEET Specific Heat Capacity (C) The energy transferred as heat that is required to raise the temperature of 1 gram of a substance by 1 kelvin. q= - m x Cp X AT q=heat lost or gained, m= mass of solution (grams) Cp = the Specific Heat Capacity of a compound (J/g x °C)) AT = Tfinal-Tinitial AHsolution = 9 moles of salt 1. If 1.25 g of ammonium nitrate (NH4NO3) is dissolved in 25.0 mL...
9:484 Back Specific Heat Chpt3.docx Heat Capacity 1) How many Joules of energy are required to raise 15g of aluminum from 30 C to 100°C? Given the heat capacity of Aluminum is 0.903 Jig C 2) If 6093 cal of energy is added to some pure substance. If the temperature went from 10°C to 50°C, how many grams of the substance was present. Given the of the substance is 2.45cal/g C 3) If 4x10* J of energy is added to...
Question 3 (1 point) Calculate the specific heat for the element Madeupium if the addition of 118.3J increases the temperature of a 13.8 g sample by 17.2 K A) 94.9 J/g°C B) 148 J/g°C OC) 0.498 J/g°C D) 2.01 J/g°C Question 4 (1 point) 0.839 g of an unknown organic liquid was burned in a bomb calorimeter, heating the 395 grams of water by 11.1°C. Assuming the calorimeter absorbs a negligible amount of heat, calculate the heat added to the...
The temperature of an object increases by 48.3 °C when it absorbs 3701 J of heat. Calculate the heat capacity of the object. C = 0.240 The mass of the object is 319 g. Use the table of specific heat values to identify the composition of the object. Substance gold silver Specific heat (J/(g · °C)) 0.129 0.240 0.444 0.900 iron aluminum
solve
The heat energy associated with a change in temperature that does not involve a change in phase is given by -msAT where q is heat in joules, mis mass in grams, s is specific heat in joules per gram-degree Celsius, J/(g·°C). and AT is the temperature change in degrees Celsius. The heat energy associated with a change in phase at constant temperature is given by where q is heat in joules, m is mass in grams, and ? H...
In the laboratory a student finds that it takes 183 Joules to increase the temperature of 13.0 grams of solid magnesium from 24.6 to 39.4 degrees Celsius. i The specific heat of magnesium calculated from her data is J/gºC. In the laboratory a student finds that it takes 595 Joules to increase the temperature of 11.2 grams of liquid water from 21.6 to 35.3 degrees Celsius. The specific heat of water calculated from her data is J/gºC.
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