What is the concentration, in mol L-1, of a solution containing 1.2 g of lithium carbonate in 100 mL solution?

Give your answer as 2 sig fig, followed by a space and the units (remember the units given in a previous question).

2 answers

mols Li2CO3 = grams/molar mass
M = mols/0.1L = ?
how do i find molar mass?