Find the mass of na2co3 needed to give 22.4dm³ of ca2 stp in this reaction
na2co3+> 2nacl+co2+h2o
(na=23, o=16, c=12,molar volume or a gas at stp= 22.4dm³

You could say the relative location of washington, d. c.

5. there were nearly 1,000 pirate attacks between 1994 and 2005 off the coast of according to the international maritime bureau's annual piracy report for 2005.

At which boundary does subduction stop occurring, resulting in a mountain range?