What mass of Na2CrO4 is required to precipitate all of the silver ions from 20.0 mL of a 0.500 M solution of AgNO3

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

What is a difference between a mixture of elements and a mixture of compounds