Given the mass of sample placed on the watch glass = 141 mg
Converting mass of the sample from mg to g:
[tex]141 mg * \frac{1 g}{1000 mg} =0.141 g[/tex]
Mass of watch glass = 9.203 g
So, the total mass of watch glass and the sample = 9.203 g +0.141 g = 9.344 g
Therefore, the mass of the watch glass and the sample in grams is 9.344 g
