What conducts better, metal or nometal?
why?

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

What is the molar mass of a gas that has density of 2.054 g/l

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.)