How many moles of water (H2O) are present in a beaker containing 45. 9 g H2O? Give your answer to the correct number of significant figures. (Molar mass of water = 18. 02 g/mol) 45. 9 g H2O = mol H2O.

Why are people not able to scuba dive in the deep part of the ocean

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?

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