Many other oxyanions form complexes; these include copper(II) acetate, copper(II) nitrate, and copper(II) carbonate. Copper(II) sulfate forms a blue crystalline pentahydrate, the most familiar copper compound in the laboratory. It is used in a fungicide called the Bordeaux mixture.
CBSA has tools available to avoid border wait times at our 26 busiest land border crossings. The Current Border Wait Times table displays wait times for reaching the CBSA primary inspection booth when crossing the Canada/U.S. land border and is updated hourly. [More]
You cannot extend at a border crossing. Whether you have a 60-day tourist visa and you're applying to extend it for 30 days, or you have a 30-day entry permit and you're applying to extend it for 7 days, you'll pay the same fee, currently 1,900 baht.