Rank the following elements by increasing electronegativity: calcium, iron, neon, nitrogen, silicon

Why does asexual reproduction result in offspring with identicle genetic variation

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.)

Chemistry worksheet - i am not sure what they are asking for exactly?