Answer:
2.4E-4
Step-by-step explanation:
Hello,
By applying the following mass-mole relationship, the concentration could be computed as follows (assuming molarity as long as it isn't specified), since in the silver carbonate two silver molecules are present:
![[Ag]=1.2x10^(-4)(molAg_2CO_3)/(L) *(2mol Ag)/(1 mol Ag_2CO_3)=2.4x10^(-4)(mol Ag)/(L)](https://img.qammunity.org/2020/formulas/chemistry/college/j1t83pr7wq45dntq3xnfooo11fo8kaiin6.png)
Best regards.