Help!
Can someone please explain? Thank you!

How many grams of naoh are needed to make 0.250 liter of a 0.500 m solution of naoh? 0.125 g 5.00 g 2.00 g

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

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?