A chemist will prepare a stock solution of HCl so that 27.15 mL stock samples will produce a solution with a concentration of 0.357 M after 741.25 mL of water is added. What should the molarity of the stock solution be?

What material does not melt at any temperature

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.