Asigna el nombre tradicional a los siguientes hidróxidos a. Au(OH)3
b. Ba(OH)2
c. Hg(OH)2
d. V(OH)3
e. Nb(OH)5

Seawater contains approximately 3.5%nacl by mass and has a density of 1.02 g/ml. what volume of seawater contains 7.5 g of sodium?

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?