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Problem 3: a. Calculate the wavelength of light in (nm) with a frequency of 1.53x 10"...
Calculate the enthalpy of decomposition of aluminum chloride in the town 2 AICE() ---> 2Al(s). (g)...
Calculate the enthalpy of decomposition of aluminum chloride in the town 2 AICE() ---> 2Al(s). (g) Use the following four equations: a) 2Al(s) + 6HCl(aq) + 2AICI.(aq) + 3H2(8) AH" --1049 kJ/mol b) HCl(aq) - HC (g) AH':- 74.8 kļ/mol c) H2(g) + Cl:(g) - 2HCI(g) AH", -1845 kJ/mol d) AICI, (s) -- AICI (aq) AH'= -323 kJ/mol
Experiment 13-Post-Lab Assignment 1. Athletes use cold packs containing ammonium nitrate solutions to ice their injuries....
Experiment 13-Post-Lab Assignment 1. Athletes use cold packs containing ammonium nitrate solutions to ice their injuries. A 1.25 G sample of ammonium nitrate is dissolved in 25.0 mL of water to form a solution. The temperature of the solution falls from 25.8°C to 21.9°C. Find the enthalpy of the reaction (AH ), in kJ/mol. Assume the density of water is 1.00 g/mL and the heat capacity of the total solution to be 4.184 J/g °C 2. Calculate AHⓇ in kJ/mol...
Calculate the heart of formation for aluminum chloride using the following thermochemical equations: 2Al (s) +...
Calculate the heart of formation for aluminum chloride using the following thermochemical equations: 2Al (s) + 6HCl (aq) ---> 2AlCl3 (aq) + 3H2 (g) . ΔH = -1049 kJ HCl (g) ---> HCl (aq) . ΔH = -74.8 kJ H2 (g) + Cl2 (g) ---> 2HCl (g) ΔH = -1845 kJ AlCl3 (s) ---> AlCl3 (aq) ΔH = -323 kJ
Use Hess's Law to determine Delta H for the reaction 2 Al(s) + 3 Cl_2(g) rightarrow...
Use Hess's Law to determine Delta H for the reaction 2 Al(s) + 3 Cl_2(g) rightarrow 2 AlCl_3(s) given: 2 Al(s) + 6 HCl(aq) rightarrow 2 AlCl_3(aq) + 3 H_2(g) Delta H = -1049 kJ HCl(g) rightarrow HCl(aq) Delta H = -74.8 kJ H_2(g) + Cl_2(g) rightarrow 2 HCl(g) Delta H = -185 kJ AlCl_3(s) rightarrow AlCl_3(aq) Delta H = -323 kJ
2Al(s) + 3Cl2(8) - 2AICI,(s) AH =? Use the reactions here to determine the AH' for...
2Al(s) + 3Cl2(8) - 2AICI,(s) AH =? Use the reactions here to determine the AH' for reaction : ® HCI(g) — HCl(aq) AH;, = -74.8 kJ (a) Hz(8) + C1>(- 2HCl(8) AH) = -185 kJ M AICI;(aq) - AICI,(s) AH = +323 kJ/mol M 2Al(s) + 6HCl(aq) - 2AICI,(aq) + 3H2(g) AH = -10:49 J
calculate the frequency of visible light having a wavelength of 486 nm. calculate the wavelength (nm)...
calculate the frequency of visible light having a wavelength of 486 nm. calculate the wavelength (nm) of a H atom (1.67 * 10-27 kg) moving at 900 cm/s
8. C alculate the frequency of green light that has a wavelength of 531 nm? 9....
8. C alculate the frequency of green light that has a wavelength of 531 nm? 9. Calculate the wavelength of blue light that has a frequency of 6.68 x 10" s 10. Calculate the energy of a photon with a frequency of 7.00 x 1014s I1. Calculate the frequency of a photon if the energy is 7.26 x 1019 J 12. Calculate the wavelength (in nm) of a photon if the energy is 7.26 x 10-19 J.
calculate the wavelength in the unit of nm, frequency in the unit of HZ, and the...
calculate the wavelength in the unit of nm, frequency in the unit of HZ, and the wavenumber in the unit of cm^-1 of an electromagnetic radiation with the energy f 1.326X 10^-20 J. E=hv V=vλ ν with a line =1/λ where E is the energy (j): h is plank constand, v is frequency, V is the velocity of light, v with a line is the wavenumber, λ is wavelength
calculate the wavelength of the light emitted by a hydrogen atom during a transition of its...
calculate the wavelength of the light emitted by a hydrogen atom
during a transition of its electron from the n=4 to the n=1
principal energy level. E=-2.18x10^-18 J(1/n^2)
Constants (c = 2.9979 | 109 m/s; h = 6.626 | 10 " J[s) 1. What is the energy in joules of a mole of photons with visible light of wavelength 486 nm? (246 kJ) 2. Calculate the wavelength of the light emitted by a hydrogen atom during a transition of its...
1. What is the frequency of visible light with a wavelength of 500 nm? 2. For...
1. What is the frequency of visible light with a wavelength of 500 nm? 2. For each of the following, describe the relationship as directly or inversely proportional: a) wavelength vs. frequency b) wavelength vs. energy c) frequency vs. energy -372.1 nm and 2. - 376,4 nm 3. When sodium is excited in a flame, two ultraviolet spectral lines at respectively are emitted. Which wavelength represents photons with a) higher energy? b) longer wavelengths? c) higher frequencies?
Calculate the enthalpy of decomposition of aluminum chloride in the town 2 AICE() ---> 2Al(s). (g) Use the following four equations: a) 2Al(s) + 6HCl(aq) + 2AICI.(aq) + 3H2(8) AH" --1049 kJ/mol b) HCl(aq) - HC (g) AH':- 74.8 kļ/mol c) H2(g) + Cl:(g) - 2HCI(g) AH", -1845 kJ/mol d) AICI, (s) -- AICI (aq) AH'= -323 kJ/mol
Experiment 13-Post-Lab Assignment 1. Athletes use cold packs containing ammonium nitrate solutions to ice their injuries. A 1.25 G sample of ammonium nitrate is dissolved in 25.0 mL of water to form a solution. The temperature of the solution falls from 25.8°C to 21.9°C. Find the enthalpy of the reaction (AH ), in kJ/mol. Assume the density of water is 1.00 g/mL and the heat capacity of the total solution to be 4.184 J/g °C 2. Calculate AHⓇ in kJ/mol...
Use Hess's Law to determine Delta H for the reaction 2 Al(s) + 3 Cl_2(g) rightarrow 2 AlCl_3(s) given: 2 Al(s) + 6 HCl(aq) rightarrow 2 AlCl_3(aq) + 3 H_2(g) Delta H = -1049 kJ HCl(g) rightarrow HCl(aq) Delta H = -74.8 kJ H_2(g) + Cl_2(g) rightarrow 2 HCl(g) Delta H = -185 kJ AlCl_3(s) rightarrow AlCl_3(aq) Delta H = -323 kJ
2Al(s) + 3Cl2(8) - 2AICI,(s) AH =? Use the reactions here to determine the AH' for reaction : ® HCI(g) — HCl(aq) AH;, = -74.8 kJ (a) Hz(8) + C1>(- 2HCl(8) AH) = -185 kJ M AICI;(aq) - AICI,(s) AH = +323 kJ/mol M 2Al(s) + 6HCl(aq) - 2AICI,(aq) + 3H2(g) AH = -10:49 J
8. C alculate the frequency of green light that has a wavelength of 531 nm? 9. Calculate the wavelength of blue light that has a frequency of 6.68 x 10" s 10. Calculate the energy of a photon with a frequency of 7.00 x 1014s I1. Calculate the frequency of a photon if the energy is 7.26 x 1019 J 12. Calculate the wavelength (in nm) of a photon if the energy is 7.26 x 10-19 J.
calculate the wavelength of the light emitted by a hydrogen atom
during a transition of its electron from the n=4 to the n=1
principal energy level. E=-2.18x10^-18 J(1/n^2)
Constants (c = 2.9979 | 109 m/s; h = 6.626 | 10 " J[s) 1. What is the energy in joules of a mole of photons with visible light of wavelength 486 nm? (246 kJ) 2. Calculate the wavelength of the light emitted by a hydrogen atom during a transition of its...
1. What is the frequency of visible light with a wavelength of 500 nm? 2. For each of the following, describe the relationship as directly or inversely proportional: a) wavelength vs. frequency b) wavelength vs. energy c) frequency vs. energy -372.1 nm and 2. - 376,4 nm 3. When sodium is excited in a flame, two ultraviolet spectral lines at respectively are emitted. Which wavelength represents photons with a) higher energy? b) longer wavelengths? c) higher frequencies?
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