The density of solid lead (Pb) at room temperature is 11.35 g/cm3, while the density of liquid lead at its melting point of 327°C is 10.68 g/cm². Why is the density of the liquid lead slightly lower?

A The liquid lead atoms are less likely to move in a given amount of space than the solid lead atoms.

B The liquid lead atoms have a slightly larger atomic radius than the solid lead atoms.

The liquid lead atoms are less closely arranged in a given amount of space than the solid lead atoms.

D

The liquid lead atoms have slightly less kinetic energy than the solid lead atoms.

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

What human activity increases beach erosion?

Chromosome 17 is made of over million base pairs.