34. Calculate the specific heat (J/g∘C) for a 25.5 g sample of a metal that absorbs...
34. Calculate the specific heat (J/g∘C) for a 25.5 g sample of a metal that absorbs 617 J when temperature increases from 38.9 ∘C to82.1 ∘C.
SH = ? g/J Celcius
36. The heat of reaction, ΔH, is the amount of heat absorbed or released during a chemical reaction. It is calculated as the difference in energy of the products and the reactants.
Part B. The energy diagram shown represents the chemical reaction between solid ammonium chloride and solid barium hydroxide octahydrate:
2NH4Cl(s)+Ba(OH)2⋅8H2O(s)→2NH3(aq)+BaCl2(aq)+10H2O(l)
The ΔH for this reaction is 54.8 kJ . How much energy would be absorbed if 26.7 g of NH4Cl reacts?
Express your answer with the appropriate units.
energy absorbed?
Homework Answers
34)
Given:
Q = 617 J
m = 25.5 g
Ti = 38.9 oC
Tf = 82.1 oC
use:
Q = m*C*(Tf-Ti)
617.0 = 25.5*C*(82.1-38.9)
C = 0.560 J/g.oC
Answer: 0.560 J/g.oC
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34. Calculate the specific heat (J/g∘C) for a 25.5 g sample of a
metal that absorbs...
The energy diagram shown represents the chemical reaction between solid ammonium chloride and solid barium hydroxide...
The energy diagram shown represents the chemical reaction between solid ammonium chloride and solid barium hydroxide octahydrate: 2NH4Cl(s)+Ba(OH)2⋅8H2O(s)→2NH3(aq)+BaCl2(aq)+10H2O(l) The ΔH for this reaction is 54.8 kJ . How much energy would be absorbed if 26.7 g of NH4Cl reacts? Express your answer with the appropriate units.
Part B The energy diagram shown represents the chemical reaction between solid ammonium chloride and solid...
Part B The energy diagram shown represents the chemical reaction between solid ammonium chloride and solid barium hydroxide octahydrate: 2NH CI(8) + Ba(OH), 8H2O(s)2NH, (aq) + BaCl2(aq) + 10H2O(1) The AH for this reaction is 54.8 kJ. How much energy would be absorbed it 27.3 g of NHCl reacts? Express your answer numerically in kilojoules. View Available Hint(s) O AED O ? energy absorbed - Submit Request Answer
22 of 25 Review | Constants Periodic Tab roryy vra . **GIUG, wo wo wo IVO NO Gyno y oponyi endothermic reaction wit...
22 of 25 Review | Constants Periodic Tab roryy vra . **GIUG, wo wo wo IVO NO Gyno y oponyi endothermic reaction with a positive AH value. Part B The energy diagre shown t osents the chemical reaction between solid ammonium chloride and barium hydroxide octahydrate: 2NH,CI() + Ba(OH), 8H2O(s)+2NH3(aq) + BaCl(aq) + 10,00 The AH for his reais 54.8 kJ. How much energy would be absorbed if 27.3 g of NHC reacts? Express your answer with the appropriate units....
The energy diagram shown represents the chemical reaction between solid ammonium chloride and solid barium hydroxide o...
The energy diagram
shown represents the chemical reaction between solid ammonium
chloride and solid barium hydroxide octahydrate: 2N H 4 Cl(s)+Ba(OH
) 2 ⋅8 H 2 O(s)→2N H 3 (aq)+BaC l 2 (aq)+10 H 2 O(l) The ΔH for
this reaction is 54.8 kJ . How much energy would be absorbed if
26.3 g of N H 4 Cl reacts?.
Energy diagram Energy Progress of reaction
Assuming that the specific heat of the solution is 4.18 J/(g⋅∘C) and that the calorimeter itself...
Assuming that the specific heat of the solution is 4.18
J/(g⋅∘C) and that the calorimeter itself absorbs a negligible
amount of heat, calculate ΔH in kilojoules for the reaction.
Part A Assuming that the specific heat of the solution is 4.18 J/(g . C) and that the calorimeter itself absorbs a negligible amount of heat, calculate AH in kilojoules for the reaction K2O(8)+H20()-2KOH(aq) ανα ΑΣφ ? ΔΗ - kJ Request Answer Submit Provide Feedback Next> Constants Periodic Tab When 1.045...
The specific heat of copper is 0.385 J/(g∙°C). If 34.2 g of copper, initially at 25°C, absorbs 4.689 kJ, what will be t...
The specific heat of copper is 0.385 J/(g∙°C). If 34.2 g of copper, initially at 25°C, absorbs 4.689 kJ, what will be the final temperature of the copper? a. 25.4°C b. 27.8°C c. 356°C d. 381°C A chemical reaction causes the temperature of 1.0 x 102 g of water in a calorimeter to rise from 25°C to 40°C. The specific heat of water is 4.184 J/(g∙°C). What is the heat of reaction, qP? a. -0.31 kJ b. -0.75 kJ c....
The specific heat of copper is 0.385 J/(g∙°C). If 34.2 g of copper, initially at 25°C, absorbs 4.689 kJ, what will be t...
The specific heat of copper is 0.385 J/(g∙°C). If 34.2 g of copper, initially at 25°C, absorbs 4.689 kJ, what will be the final temperature of the copper? a. 25.4°C b. 27.8°C c. 356°C d. 381°C A chemical reaction causes the temperature of 1.0 x 102 g of water in a calorimeter to rise from 25°C to 40°C. The specific heat of water is 4.184 J/(g∙°C). What is the heat of reaction, qP? a. -0.31 kJ b. -0.75 kJ c....
help A 22.9 g sample of iron absorbs 155 J of heat, upon which the temperature...
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A 22.9 g sample of iron absorbs 155 J of heat, upon which the temperature of the sample increases from 23.9°C to 38.9 °C. What is the specific heat (s) of iron? Hint: s = (m X AT) O 0.451 J/g-°C O 102 J/g-°C 53,200 J/g-°C O 0.451 J/g-°C 237 J/g-90
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Calculate the specific heat (J/g degree C) for each of the following: a. a 13.5-g sample...
Calculate the specific heat (J/g degree C) for each of the following: a. a 13.5-g sample of zinc (Zn) heated from 24.2 degree C to 83.6 degree C that absorbs 312 J of heat b. a 48.2-g sample of a metal that absorbs 345 J with a temperature increase from 35.0 degree C to 57.9 degree C
Part B The energy diagram shown represents the chemical reaction between solid ammonium chloride and solid barium hydroxide octahydrate: 2NH CI(8) + Ba(OH), 8H2O(s)2NH, (aq) + BaCl2(aq) + 10H2O(1) The AH for this reaction is 54.8 kJ. How much energy would be absorbed it 27.3 g of NHCl reacts? Express your answer numerically in kilojoules. View Available Hint(s) O AED O ? energy absorbed - Submit Request Answer
22 of 25 Review | Constants Periodic Tab roryy vra . **GIUG, wo wo wo IVO NO Gyno y oponyi endothermic reaction with a positive AH value. Part B The energy diagre shown t osents the chemical reaction between solid ammonium chloride and barium hydroxide octahydrate: 2NH,CI() + Ba(OH), 8H2O(s)+2NH3(aq) + BaCl(aq) + 10,00 The AH for his reais 54.8 kJ. How much energy would be absorbed if 27.3 g of NHC reacts? Express your answer with the appropriate units....
The energy diagram
shown represents the chemical reaction between solid ammonium
chloride and solid barium hydroxide octahydrate: 2N H 4 Cl(s)+Ba(OH
) 2 ⋅8 H 2 O(s)→2N H 3 (aq)+BaC l 2 (aq)+10 H 2 O(l) The ΔH for
this reaction is 54.8 kJ . How much energy would be absorbed if
26.3 g of N H 4 Cl reacts?.
Energy diagram Energy Progress of reaction
Assuming that the specific heat of the solution is 4.18
J/(g⋅∘C) and that the calorimeter itself absorbs a negligible
amount of heat, calculate ΔH in kilojoules for the reaction.
Part A Assuming that the specific heat of the solution is 4.18 J/(g . C) and that the calorimeter itself absorbs a negligible amount of heat, calculate AH in kilojoules for the reaction K2O(8)+H20()-2KOH(aq) ανα ΑΣφ ? ΔΗ - kJ Request Answer Submit Provide Feedback Next> Constants Periodic Tab When 1.045...
help
A 22.9 g sample of iron absorbs 155 J of heat, upon which the temperature of the sample increases from 23.9°C to 38.9 °C. What is the specific heat (s) of iron? Hint: s = (m X AT) O 0.451 J/g-°C O 102 J/g-°C 53,200 J/g-°C O 0.451 J/g-°C 237 J/g-90
Calculate the specific heat (J/g degree C) for each of the following: a. a 13.5-g sample of zinc (Zn) heated from 24.2 degree C to 83.6 degree C that absorbs 312 J of heat b. a 48.2-g sample of a metal that absorbs 345 J with a temperature increase from 35.0 degree C to 57.9 degree C
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