what is the mass of 0.513 mol al₂o₃? give your answer to the correct number of significant figures. (molar…

Explanation:

Step1: Recall mass - mole relationship

$m = n\times M$ (where $m$ is mass, $n$ is number of moles, $M$ is molar mass)

Step2: Substitute given values

$m=0.513\ mol\times102.0\ g/mol$ $m = 52.326\ g$

Step3: Round to correct significant figures

Since 0.513 has 3 significant figures and 102.0 has 4 significant figures, the result should be rounded to 3 significant figures. So $m = 52.3\ g$

Answer:

52.3 g