Answer:
C is the answer
Step-by-step explanation:
Li2CO3 + HCl - - - - - - -> LiCl + H2O + CO2
Li. Li. H. Li. H. H. C
C Cl. Cl. O. O. O
O. O. O
2 Li ------>1Li so we put 2 in front LiCl on the right side to make 2Li---->2Li.
1H------->2H so we put 2 in front HCl on left side to make
Li2CO3 + 2HCl - - - - - - -> 2LiCl + H2O + CO2