The unit of electrical charge is the Coulomb.

Enthalpy can be expressed in both Joules per mole and Calories per mole.

The unit of entropy is Joules per mole per Kelvin (J/mol·K).

The unit of rate constant for a second-order reaction is L/(mol·s).

The unit of the rate constant for a second-order reaction is L²/mol²·s.

If the roots are reciprocals, then k = sum of roots = 0 and product = 1. Thus, k = 2.

For equal roots, the discriminant must be zero: (-4)^2 - 4*1*k = 0 => 16 - 4k = 0 => k = 4.

For equal roots, the discriminant must be zero: k^2 - 4*1*16 = 0 => k^2 = 64 => k = 8 or k = -8.

Using Vieta's formulas, k = 3 + 4 = 7.

For d orbitals, the azimuthal quantum number l is equal to 2.

The ideal gas constant R is 0.0821 L·atm/(K·mol).

R can have different values depending on the units used, including 0.0821 L·atm/(K·mol), 8.314 J/(K·mol), and 62.36 L·mmHg/(K·mol).

Kc = ([C][D]) / ([A][B]) = (0.3 * 0.4) / (0.1 * 0.2) = 2.0

Kc = [C]/([A][B]) = 0.3/(0.1*0.2) = 1.5

Kc = [B][C] / [A]^2 = (0.2)(0.3) / (0.5)^2 = 0.12 / 0.25 = 0.48.

Kp is defined as the partial pressure of products over reactants, raised to the power of their coefficients.

The value of Kp is specific to the reaction conditions and cannot be determined without knowing the initial concentrations or the extent of the reaction.

The gas constant R is 0.0821 L·atm/(K·mol).

The principal quantum number n for the f subshell is 4.

The principal quantum number (n) indicates the energy level of the electron. For 4s, n=4.

In the ground state, the electron is in the first energy level, which corresponds to n=1.

Potassium (K) has an atomic number of 19, and its electron configuration ends in 4s, so the outermost electron has n=4.

Potassium has the electronic configuration [Ar] 4s1, so the outermost electron is in n=4.

Sodium has an atomic number of 11, and its electron configuration is 1s² 2s² 2p⁶ 3s¹. The outermost electrons are in n=3.

The ground state of hydrogen corresponds to n=1.

Potassium has an atomic number of 19, and its outermost electrons are in the n=4 shell.

Sodium has an atomic number of 11, and its outermost electrons are in the n=3 shell.

The universal gas constant R is 0.0821 L·atm/(K·mol).

NaCl dissociates into two ions (Na+ and Cl-), so the van 't Hoff factor (i) is 2.

The van 't Hoff factor (i) is equal to the number of particles the solute dissociates into. For a strong electrolyte that dissociates into 3 ions, i = 3.