Which two elements could form an ionic compound? A. CO (Carbon monoxide)
B. LF (Lithium Fluoride)
C. NH3 (Ammonia)
D. With (Copper

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?

When a septic tank backs up a goes in to clean it out

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