Amixture of sand and table salt can be separated by filtration because the substance in the mixture differ in

In an energy pyramid, which level has the most available energy?

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

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.)