25 cc of N/10 HCl neutralized 21 cc of sodium carbonate solution. How much water must be added to one litre solution of Na2CO3 to make it exactly N/10 solution.

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.