Homework Answers
Heat absorbed by the water = mass of water * Specific heat * Temperature change = 53.8 * 4.184 * (48.44 - 21)
= 6176.722 J = 6.177 KJ
Heat of reaction = - heat absorbed = -6.177 KJ
Moles of FeCl3 = mass /* molar mass = 7.66 / 162.2 = 4.723 * 10-2 mol
Heat per moles = Heat / moles = -6.177 / (4.723 * 10-2) = -130.79 KJ/mol
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RMy Not 14. 0/4 Submissions Used -/0.1 points thermometer stirrer coffee cups containing reaction mixture When...
- + 0/0.1 points | Previous Answers 3/4 Submissions Used thermometer stirrer coffee cups containing reaction...
- + 0/0.1 points | Previous Answers 3/4 Submissions Used thermometer stirrer coffee cups containing reaction mixture When a 6.14-9 sample of solid iron(II) chloride dissolves in 55.6 g of water in a coffee-cup calorimeter (see above figure) the temperature rises from 20.00 °C to 35.10 °C. Calculate AH in kJ/mol FeCl2 for the solution process. FeCl2(s) → Fe2+ (aq) + 2Cl(aq) The specific heat of water is 4.18 J/g-K. AHsolution = 80.445598 x kJ/mol FeCl2.
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thermometer coffee cups containing reaction mixture When a 7.89-9 sample of solid potassium chlorate dissolves in 32.0 g of water in a coffee-cup calorimeter (see above figure) the temperature falls from 20.00 °C to 3.899 °C. Calculate AH in kl/mol KCIOy for the solution process. KCIO,(s) - K*(aq) + CIO,'(aq) The specific heat of water is 4.18 3/ok Aucution - Kl/mol KCO,
When a 5.12-g sample of solid sodium nitrate dissolves in 31.1 g of water in a...
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When a 4.09-g sample of gaseous hydrogen bromide dissolves in
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delta Hsolution = _____ kJ/mol HBr.
I entered answers 77.27 and 84.81 and both were incorrect
Thermometer When a solid dissolves in water, heat may be evolved or absorbed. The heat of aissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the...
Thermometer When a solid dissolves in water, heat may be evolved or absorbed. The heat of aissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 11.13 g of CsBr(s) are dissolved in 114.50 g of water, the temperature of the solution drops from 25.61 to 22.35 °C The heat capacity of the calorimeter (sometimes refered to as the calorimeteγ constant) was determined in a separate...
Part A: Part B: Use the References to access important values if needed for this question. Thermometer When a solid di...
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Use the References to access important values if needed for this question. Thermometer When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 2.79 g of NH_Cl(s) are dissolved in 106.00 g of water, the temperature of the solution drops from 23.17 to 21.34 °C. The heat...
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When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer In the laboratory a general chemistry student finds that when 9.66 g of CSCI(S) are dissolved in 106.80 g of water, the temperature of the solution drops from 22.55 to 19.99 °C. Cardboard or Styrofoam lid The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate...
When a 3.13-g sample of liquid sulfuric acid dissolves in 33.6 g of water in a...
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Calculate H in kJ/mol H2SO4 for
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H2SO4(l)
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Hsolution =____ kJ/mol
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When a 7.46-g sample of solid sodium hydroxide dissolves in 36.9 g of water in a...
When a 7.46-g sample of solid sodium hydroxide dissolves in 36.9 g of water in a coffee-cup calorimeter (see above figure) the temperature rises from 24.00 oC to 68.26 oC. Calculate H in kJ/mol NaOH for the solution process. NaOH(s) Na+(aq) + OH-(aq) The specific heat of water is 4.18 J/g-K. Hsolution = . kJ/mol NaOH.
Thermometer When a solid dissolves in water heat may be evolved or absorbed. The heat of...
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- + 0/0.1 points | Previous Answers 3/4 Submissions Used thermometer stirrer coffee cups containing reaction mixture When a 6.14-9 sample of solid iron(II) chloride dissolves in 55.6 g of water in a coffee-cup calorimeter (see above figure) the temperature rises from 20.00 °C to 35.10 °C. Calculate AH in kJ/mol FeCl2 for the solution process. FeCl2(s) → Fe2+ (aq) + 2Cl(aq) The specific heat of water is 4.18 J/g-K. AHsolution = 80.445598 x kJ/mol FeCl2.
thermometer coffee cups containing reaction mixture When a 7.89-9 sample of solid potassium chlorate dissolves in 32.0 g of water in a coffee-cup calorimeter (see above figure) the temperature falls from 20.00 °C to 3.899 °C. Calculate AH in kl/mol KCIOy for the solution process. KCIO,(s) - K*(aq) + CIO,'(aq) The specific heat of water is 4.18 3/ok Aucution - Kl/mol KCO,
When a 5.12-g sample of solid sodium nitrate dissolves in 31.1 g
of water in a coffee-cup calorimeter (see above figure) the
temperature falls from 25.00 oC to 16.37 oC.
Calculate H in kJ/mol NaNO3 for the solution
process.
NaNO3(s)
Na+(aq) + NO3-(aq)
The specific heat of water is 4.18 J/g-K.
We were unable to transcribe this imageWe were unable to transcribe this imagethermometer stirrer coffee cups containing reaction mixture When a 5.12-g sample of solid sodium nitrate dissolves in...
Thermometer When a solid dissolves in water, heat may be evolved or absorbed. The heat of aissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 11.13 g of CsBr(s) are dissolved in 114.50 g of water, the temperature of the solution drops from 25.61 to 22.35 °C The heat capacity of the calorimeter (sometimes refered to as the calorimeteγ constant) was determined in a separate...
Part A:
Part B:
Use the References to access important values if needed for this question. Thermometer When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 2.79 g of NH_Cl(s) are dissolved in 106.00 g of water, the temperature of the solution drops from 23.17 to 21.34 °C. The heat...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer In the laboratory a general chemistry student finds that when 9.66 g of CSCI(S) are dissolved in 106.80 g of water, the temperature of the solution drops from 22.55 to 19.99 °C. Cardboard or Styrofoam lid The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate...
Thermometer When a solid dissolves in water heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 2.06 g of KC104) are dissolved in 115.80 g of water, the temperature of the solution drops from 22.30 to 20.66 °C. Based on the student's observation, calculate the enthalpy of dissolution of KCIO() in kJ/mol. Nested Styrofoam cups Assume...
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