I tried using your stochiometry trick from this video: https://imat.entermedschool.com/t/marathon-mrt-39-bmat-2017-q26-important-using-the-stochio-table-one-last-time-9-01/2872?u=juliette
However i wasn’t able to find the correct number of moles.
I calculated 0,1 moles of CaCl2. From that i found 0,2 AgNO3 and 0,1 Ca(NO3)2 using the ratios, but this was incorrect.
This is my work below, and i’ve written the correction in red.
What is my mistake?