Question

@surry99

Answer 1

\(\large\tt \begin{align} \color{black}{Au=196.97\\~\\
cl=35.45\\~\\
cl_3=35.45\times 3\\~\\
Aucl_3=196.97+35.45\times 3\\~\\~~~~~~~~~~=303.6}\end{align}\)

Answer 2

Thank you @mathmath333

Answer 3

That is correct but I suggest you put in units to justify the final answer in grams.