If the dissolution of KCl (74.55 g/mol) is expected to absorb 17.2 kJ of energy per...

If the dissolution of KCl (74.55 g/mol) is expected to absorb 17.2 kJ of energy per mole of KCl dissolved, then what is the expected change in temperature (in oC) if 2.11 grams of KCl are dissolved in 10.00 mL of water (density of 1.00 g/mL and specific heat capacity of 4.184 J/g•oC)? (Give answer as the absolute value of the temperature change; do NOT include negative sign if temperature decreases.)

Expert Solution

queen_honey_blossom answered 1 year ago

Calculate the total binding energy in kJ per mole nuclide and in kJ/mol nucleons for the...

Calculate the total binding energy in kJ per mole nuclide and in kJ/mol nucleons for the following nuclides, using the data given below. Nuclide Total binding energy kJ/mol nuclide kJ/mol nucleons (a) 12 6 C (b) 17 8 O (c) 234 90 Th Particle or atom Mass (u) proton 1.00728 neutron 1.00866 electron 0.00055 12 6 C 12.00000 17 8 O 16.99913 234 90 Th 234.04360 1 u = 1.66054×10-27 kg

The reaction C4H8(g)⟶2C2H4(g)C4H8(g)⟶2C2H4(g) has an activation energy of 262 kJ/mol.262 kJ/mol. At 600.0 K,600.0 K, the...

The reaction C4H8(g)⟶2C2H4(g)C4H8(g)⟶2C2H4(g) has an activation energy of 262 kJ/mol.262 kJ/mol. At 600.0 K,600.0 K, the rate constant, ?,k, is 6.1×10−8 s−1.6.1×10−8 s−1. What is the value of the rate constant at 765.0 K?

The activation energy for the reaction H2(g) + I2(g) ? 2 HI(g) is 167 kJ/mol, and...

The activation energy for the reaction H2(g) + I2(g) ? 2 HI(g) is 167 kJ/mol, and ?E for the reaction is +28 kJ/mol. What is the activation energy for the decomposition of HI?

The energy needed for the following process is 1.960 × 104 kJ/mol: Li(g) → Li3+(g) +...

The energy needed for the following process is 1.960 × 104 kJ/mol: Li(g) → Li3+(g) + 3e− If the first ionization energy of lithium is 5.20 × 102 kJ/mol, calculate the second ionization energy of lithium—that is, the energy required for the process: Li+(g) → Li2+(g) + e− A hydrogen-like ion is an ion containing only one electron. The energies of the electron in a hydrogen-like ion are given by En = −(2.18 × 10−18 J) (Z2)(1/n2) where En is...

The activation energy for a reaction is changed from 184 kJ/mol to 59.3 kJ/mol at 600....

The activation energy for a reaction is changed from 184 kJ/mol to 59.3 kJ/mol at 600. K by the introduction of a catalyst. If the uncatalyzed reaction takes about 2653 years to occur, about how long will the catalyzed reaction take? Assume the frequency factor A is constant and assume the initial concentrations are the same

Calculate the masses of NaCl (58.44 g/mol) and KCl (74.55 g/mol) that are required to prepare...

Calculate the masses of NaCl (58.44 g/mol) and KCl (74.55 g/mol) that are required to prepare 500.00 mL of a standard solution that contains N a + Na+ and K + K+ present at 540.0 ppm w/v. mass of NaCl ____ mass of KCl _____ please show work.

What is the heat of dissolution in kj/g of an unknown salt if 1.300g raises the...

What is the heat of dissolution in kj/g of an unknown salt if 1.300g raises the temperature of 51.055 g if purified water by 0.452 C. Assume the specific heat of the solution is 4.18j/c *g.

3. The dissolution of NaCl has a standard enthalpy of +3.87 kJ mol-1 at 25.0ºC and...

3. The dissolution of NaCl has a standard enthalpy of +3.87 kJ mol-1 at 25.0ºC and 1bar. Salt water has 35g/kg salt, and the heat capacity of sea water is 3993 J kg−1 K−1 at 25.0ºC. a. (20 pts) How much would water heat up or cool down by adding enough NaCl to make sea water? b. (20 pts) How much heat would be released by making 1.00kg of sea water? c. (20 pts) Assuming that 1.00kg of sea water...

The ionization energy of a certain element is 352 kJ/mol. (Ionization energy is the minimum energy...

The ionization energy of a certain element is 352 kJ/mol. (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, it is the energy in kilojoules required to remove one mole of electrons from one mole of atoms.) However, when the atoms of this element are in the first excited state, the ionization energy is only 166 kJ/mol. Based on this information, calculate the wavelength of...

Cgas = 1.3 J/g×K Hvap = 38.56 kJ/mol Cliq = 2.3 J/g×K Hfus = 5.02 kJ/mol ...

Cgas = 1.3 J/g×K Hvap = 38.56 kJ/mol Cliq = 2.3 J/g×K Hfus = 5.02 kJ/mol Csolid = 0.97 J/g×K Condensation Temp = 78.0oC Freezing Pt = -114.0oC Calculate the amount of heat required toconvert 92.6 mL of ethanol, C2H6O, from 110.0oC to -98.0oC.

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