Professor Forni has hired you as a research assistant and you need to make an X-gal staining solution for your sections containing 5mM potassium ferrocyanide, 5 mM potassium ferricyanide, 2 mM MgCl2, 0.1% Tween and 0.1% BCIP. You need 50 ml. As you are getting ready you discover that your colleague has used up all but 20 mg of the MgCl2.How much MgCl2 do you need to make 50 ml of X-gal staining solution? Do you have enough? Hint: we only care about MagnesiumChloride here. (MW MgCl2 is 95.21 g/mol)

Professor Forni has hired you as a research assistant and you need to make an X-gal staining solution for your sections containing 5mM potassium ferrocyanide, 5 mM potassium ferricyanide, 2 mM MgCl₂, 0.1% Tween and 0.1% BCIP. You need 50 ml. As you are getting ready you discover that your colleague has used up all but 20 mg of the MgCl₂.How much MgCl₂ do you need to make 50 ml of X-gal staining solution? Do you have enough? Hint: we only care about MagnesiumChloride here. (MW MgCl₂ is 95.21 g/mol)