Question

what is the mass (in grams) of 2 moles of antimony?
243.52 g
121.76 g
60.88 g
304.4 g
182.64 g

Explanation:

Step1: Find molar mass of antimony

From periodic table, molar mass of antimony ($Sb$) is $121.76\ g/mol$.

Step2: Calculate mass using formula $m = n\times M$

Here, $n = 2\ mol$ (moles) and $M=121.76\ g/mol$ (molar mass). So, $m=2\ mol\times121.76\ g/mol$.
$$m = 243.52\ g$$

Answer:

243.52 g