What is the units of k in the following expression: rate = k[a][b]?

a) s^-1
b)m^-1 s^-1
c)m^-2 s^-1
d)m

In which phase(s) do the molecules take the shape of the container?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

In which reaction is precipitation occurring?