WebSep 20, 2024 · A certain liquid has a vapor pressure of 92.0 Torr at 23.0 ∘C and 354.0 Torr at 45.0 ∘C. calculate the value of this liquid - kJ/mol. Calculate the normal boiling point of this liquid.- degress C Webas per the Arrhenius equation: In K = In A —Ea/RT where K = rate constant Ea: Energy of activation R = gas constant = 8.314J X (K*mol) T = absolute temperature A = Arrhenius constant Based on if we draw the graph of In K vs 17 T is straight line. and slope =—EafR as per the equation of trend line, slope = 3939.7 3939.7 = —Ea/8.3l4 Ea ...
Hess’s Law UCalgary Chemistry Textbook
WebOct 29, 2015 · The question requires you to put your answer in kJ m o l − 1. This means kilo joules per mole. So you have calculated the energy in kJ correctly, to get it per mole you need to first calculate the number of moles of ammonium nitrate you used. Use the equation: n = m M r n = moles m = mass in grams M r = molar mass WebAug 30, 2024 · If we look in a table of ΔH vap values, we can find that the ΔH vap is roughly 40.65 kJ/mol. Since our H value uses joules, rather than kilojoules, we can convert this to 40,650 J/mol. Plugging our constants in to our equation, we get ln (1/P2) = (40,650/8.314) ( (1/393) - (1/295)). 4 Solve the equation. crypto next week
How to Calculate Heat of Combustion: 12 Steps (with Pictures) - WikiHow
WebFeb 12, 2024 · In units of kJ/mol. -E a /RT resembles the Boltzmann distribution law. R: The gas constant. Its value is 8.314 J/mol K. T: The absolute temperature at which the … WebJul 11, 2014 · The formula is E = hc λ or λ = hc E, where h is Planck's constant. For example, what is the wavelength of a photon that has an energy of 3.36 × 10⁻¹⁹ J? λ = hc E = 6.626 ×10⁻³⁴J⋅s ×2.998 × 10⁸m⋅s⁻¹ 3.36 × 10⁻¹⁹J = 5.91 × 10⁻⁷ m = 591 nm Answer link WebThe lattice energy of KF is 794 kJ/mol, and the interionic distance is 269 pm. The Na–F distance in NaF, which has the same structure as KF, is 231 pm. Which of the following values is the closest approximation of the lattice energy of NaF: 682 kJ/mol, 794 kJ/mol, 924 kJ/mol, 1588 kJ/mol, or 3175 kJ/mol? Explain your answer. Selected Answers crypto nft buy