A chemist weighed out 20.7 g of sodium . Calculate the number of moles of sodium she weighed out

Which statement correctly describes potassium iodide, ki? there is a one-to-one ratio of potassium ions to iodide ions. potassium gains electrons and iodine loses electrons during the reaction. the lattice is held together by potassium anions and iodide cations.

Find the mass, in grams, of 5.00*10^23 molecules of f2

In which phase of mitosis do the spindle fibers pull the chromosomes apart to opposite sides of the cell ?