An unknown group 1 metal carbonate m2co3 (m=li, na or k) was reacted with excess 2 m hcl and the mass of co2 released was determined by mass difference. the initial mass of solid m2co3 was 2.002 g and the mass of co2 released was 1.206 g.

a. write the balanced chemical equation for the reaction of m2co3 with hcl.

b. what is the mole ratio of co2 to m2co3

c. calculate the molar mass of the unknown metal carbonate and identify the group 1 metal.