(1 pts) 2. a. If you believe that you have a water sample that is contaminated with barium, what
could you add to it to test it?
Choose...
A.) potassium nitrate
B.) potassium sulfate
C.) potassium chloride
D.) potassium hydroxide

List the two type of transporst that the cell in orde to transport molecules acroos the membrane

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

Which is a characteristic of the electron sea model for metallic bonding? molecular orbitals overlap to produce bands. electrons flow easily between metal nuclei. electrons are in fixed positions in the orbitals. atomic nuclei are arranged in an irregular pattern.