The electron configuration of chlorine (atomic number 17) is 1s2 2s2 2p6 3s2 3p5.

The element with atomic number 30 is Zn. Its electron configuration is [Ar] 4s2 3d10.

Iron (Fe) has an atomic number of 26, and the electron configuration for Fe3+ is [Ar] 3d5 after losing 3 electrons.

Sulfur (S) has 16 electrons. S^2- has 18 electrons, resulting in the configuration [Ne] 3s² 3p⁶.

The electron geometry for a molecule with four electron groups is tetrahedral, as the groups will arrange themselves to minimize repulsion.

Electronegativity of Na ≈ 0.9 and Cl ≈ 3.0. Difference = 3.0 - 0.9 = 2.1.

The electronegativity of fluorine is 4.0 on the Pauling scale.

The endpoint of a titration is indicated by a color change of the indicator, signaling that the reaction is complete.

The enthalpy change for the reaction is 2 times the standard enthalpy of formation of H2O(g), which is -241.8 kJ/mol, giving -483.6 kJ.

The enthalpy change for the formation of CO2 from its elements in their standard states is equal to the standard enthalpy of formation, which is -393.5 kJ/mol.

The standard enthalpy change of formation for water (H2O) is -285.8 kJ/mol.

The enthalpy change for the reaction is 2 times the standard enthalpy of formation of NH3(g), which is -45.9 kJ/mol, giving -91.8 kJ.

The enthalpy change for the reaction is calculated as ΔH = 2 * ΔHf°(NH3) = 2 * (-45.9 kJ) = -91.8 kJ.

The enthalpy change is -2ΔH_vap, as condensation releases heat equal to twice the enthalpy of vaporization.

ΔH = q/n = -800 J / 4 mol = -200 J/mol.

ΔG° = -RTln(K); K = e^(-ΔG°/RT) = e^(40,000/(8.314*298)) ≈ 1000.

The equilibrium constant K is given by K = [C]/([A][B]) at equilibrium.

Equivalent weight = molar mass / n, where n = number of H+ ions. Molar mass of H2SO4 = 98 g/mol, n = 2. Therefore, equivalent weight = 98 g / 2 = 49 g.

Molecules with sp2 hybridization have bond angles of approximately 120 degrees due to trigonal planar geometry.

The bond angle in a tetrahedral geometry is approximately 109.5 degrees.

The typical bond length for a C-C single bond is approximately 1.54 Å.

The reaction of 1-chloropropane with potassium tert-butoxide favors elimination, leading to the formation of propene as the major product.

In phosphoric acid, phosphorus has an oxidation state of +5.

Hydroboration-oxidation of 1-butyne leads to the formation of 2-butanol due to anti-Markovnikov addition.

The strong base facilitates the E2 elimination, resulting in the formation of 2-methylpropene.

Hydroboration-oxidation of 2-methylpropene leads to the formation of 2-methylpropan-1-ol due to anti-Markovnikov addition of water.

Chlorosulfonic acid introduces a sulfonyl group at the para position due to the activating effect of the methoxy group.

The expected product is para-bromoanisole, as the methoxy group is an electron-donating group that directs electrophilic substitution to the para position.

The expected product is 2,4,6-tribromophenol, as phenol is highly reactive towards electrophilic substitution due to the hydroxyl group.

The Faraday constant is approximately equal to 96485 C/mol, representing the charge of one mole of electrons.