A saline solution is 0.9% sodium chloride in water. How much sodium chloride would you use to prepare this saline solution

How many liters of hydrogen gas will be produced at stp from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phosphoric acid (h3po4) the equation is 3mg + 2h3(> mg(po4)2+3h2

What happens to isotopes that are unstable?

If a solution had a ph of 7 what is the solution