When a hydrate of Na2CO3 is heated until all the water is removed, it losses 54.3% of its mass, determine the formula of the hydrate.

27 drag each label to the correct location on the image. a particular exosolar system has five planets in total: a, b, c, d, and e. the table lists the orbital periods of these planets in days. planet orbital period (days) a 600 b 80 c 1,000 d 500 e 100 move each planet to its orbit in the system.