Balance the equation and determine the mass of lead chromate formed from 250 moles of potassium chromate. .250 K2Cro4 Pb(NO3)2 → PbCrO4 + KNO3

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

Compare and contrast the bohr model and the electron cloud models of the atom.

What is the wavelength of a wave with a velocity of 50 m/s and a frequency of 5hz a 250 m b 0.1 m c 10m d 0.01 m