What is the melting point of water?

How manyatoms of mercury are in 1.4214e+1 ml sample

Select the most likely product for this reaction: koh(aq) + co2(g) – ? k2co3(aq) + h2o(1) k(s) + h2(g) + o2(g) k(s) + co3(9) +h2

Which factor is likely to impact the possible number of compounds ?