Which statement about the manufacture of aluminium by electrolysis is correct?

А Aluminium ions are oxidised to aluminium by gaining electrons.

B Aluminium is extracted from its ore hematite. .

с Molten cryolite is used to dissolve the aluminium oxide.

D Oxygen is formed at the negative electrode.

Select the most likely product for this reaction: koh(aq) + co2(g) – ? k2co3(aq) + h2o(1) k(s) + h2(g) + o2(g) k(s) + co3(9) +h2

Salt in oceans comes from and of rocks

what is your question? collegechemistry 5+3 pts in november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.