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[DOC File]Heat Problems
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The heat of vaporization of methanol is 35.3 kJ/mol. Q= mHf 35.4/32g (mass of methanol) = 1.10 moles X 35.3 kJ/mol = 39.05 kJ. How much heat in joules is required to convert 2.5 moles of solid aluminum from 23 oC to 45oC? Yellow packet specific heat of aluminum. Q= mC(T 2.5mol X 27g/mol = 67.5 g (.897j/g oC)(22 oC) = 1332.045 J. How much heat ...
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[DOC File]1 - kau
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A) 1.31 103 kJ/mol B) 1.31 109 kJ/mol C) 2.18 10 23 kJ/mol D) 2.18 10 18 kJ/mol 93. Ionization energy is the minimum energy required to remove an electron from an atom. It is usually expressed in units of kJ/mol, that is, the energy in kilojoules required to remove one mole of electrons from one mole of atoms.
joules to kj mol calculator

[DOCX File]Name: ____________________________________ Period ...
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Jun 01, 2012 · The molar heat of combustion of heptane is 4,817 kJ/mol. How much energy is produced by the reaction above? 9,634 kJ. Calculate the molar mass of heptane. ... You must convert kJ to Joules. 1,000 J = 1 kJ. 82.5 g. An unknown substance with a mass of 75 g released 7,000 J when it is cooled from 135°C to 62°C. What is the specific heat capacity ...
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[DOC File]TEACHER’S GUIDE
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• Cp = 4.18 J/g°C, and m = 100.0 g of HCl solution. Convert joules to kJ in your final answer. 3. Determine the heat of reaction, ∆H, for both magnesium oxide and magnesium ribbon. (Remember, ∆H = -q.) 4. Determine the moles of magnesium oxide (MgO) and magnesium ribbon (Mg) used. 5.
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[DOC File]Heat of Combustion of Paraffin Wax
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3. Calculate the heat (in joules) absorbed by the water using the formula below. The. specific heat capacity of water equals 4.18 J/g ºC. Heat absorbed = (mass of H2O) x (Specific Heat of H2O) x (Temperature Change) q = m x C x ∆T . 4.
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[DOC File]AP Chemistry Lab Manual - MOLEBUS (ALLCHEM)
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Calculate the heat released by each reaction, q,(Convert joules to kJ in your final answer.) Calculate moles of NaOH used in each reaction. Use the results of the Step 4 and Step 5 calculations to determine (H/mol NaOH in each of the three reactions.
joules to kj mole

[DOC File]1) Calculate the kinetic energy in J of an electron moving at
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The heat of reaction for the combustion of a mole of Ti in this calorimeter is _____ kJ/mol. A) 14.3 . B) 19.6 . C) -311 . D) -0.154 . E) 4) The specific heat capacity of liquid water is 4.18 J/g-K. How many joules of heat are needed to raise the temperature of 5.00 g of …
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[DOC File]As we peruse the Articles of Confederation and the U
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1. Calculate the number of kJ it would take to convert 85.0 grams of water to steam. The molar mass of water is 18.0 grams/mol, and the Molar Heat of Vaporization, (Hvap, is 40.6 kJ/mol. 2. Calculate the number of kJ it would take to convert 55.0 grams of liquid water to solid ice at 0(C.
joules to kj mol

[DOC File]WPHS Chemistry
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The value of ∆H =-221 kJ/mol. (You will need to write the balanced chemical equation. How many grams of magnesium will be made if 365-kJ is released? How much energy will be released if 9.45-g of magnesium reacts? Ammonium sulfate reacts with barium hydroxide endothermically. ∆H = + 127 kJ/mol.
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[DOC File]18 Hess's Law
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Convert joules to kJ in your final answer. 4. Find H ( H = –q ). 5. Calculate moles of NaOH used in each reaction. In Reactions 1 and 2, this can be found from the mass of the NaOH. In Reaction 3, it can be found using the molarity, M, of the NaOH and its volume, in L. 6.
joules to kj mol calculator

Convert joules to kj mol