Which is the most accurate description of the liquid state of matter? a. it has a fixed shape. b. its volume is not fixed. c. it cannot take the shape of its container. d. its particles can move past and bump into each other.

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?

Which element would mostly likely have an electron affinity measuring closest to zero

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?