Dewa

1000g of a 50%(mass percentage) nitric acid solution is to be dil ute to 20%(mass percentage) nitric acid solution.how many lit ers of water should be added to the starting solution?

5.85 g of sodium chloride(NaCl) is dissolved in 250 mL OF solution. Calculate mass percentage of the solute.

1000 g of a 50% (mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution. How many liters of water should be added to the starting solution? Please show me the detail answer

What is the weakness of the Bronsted-Lowry acids and bases theory?

Which of the two is the stronger base?Give your reason. (a) HPO4 2- or PO4 3- (b)HS- or S2-

Give two bronsted acid-base that are not Arrhenius bases.

Why water is a weak electrolyte?

At 40 c,the value of Kw is 2.92 10-14.calculate the [H+] and [OH-] of pure water at 40 c.