Sodium (na) and potassium (k) are in the same group in the periodic table. sodium is in the 11th position. how many valence electrons does potassium have? a) 0 b) 1 c) 9 d) 11

How do you convert 4 mmol of bromobenzene to ml?

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)

Select the correct answer. wax is a nonpolar substance. in which type of substance is it most soluble?