26. Which group in the periodic table contains an element that can form a blue sulfate
a
compound?
(1) 1
(2)
(3) 11
(4) 17

Copper, silver, aluminum, cobalt, chromium, mercury 

0.50 hope this  

Answer it was we, the the whole people, who formed the union. and we formed it, not to give the blessings of liberty, but to secure them: not to the half of ourselves and the half of our posterity, but to the whole people- women as well as men.

Naoh + hbr -> nabr (salt) + h2o ca (oh)2 + 2hbr - - - > ca (br)2 + 2h2o