Answer
260.535 grams
Explanation
Given:
Number of moles of LiBr = 3 moles
What to find:
The grams of LiBr in 3.0 moles of LiBr
Step-by-step solution:
The molar mass of LiBr from the periodic table = 86.845 g/mol.
You can now use the mole formula to determine the grams of LiBr in 3.0 moles LiBr.
[tex]\begin{gathered} Mole=\frac{Mass}{Molar\text{ }mass} \\ \\ \Rightarrow Mass=Mole\times Molar\text{ }mass \\ \\ Mass=3.0\text{ }mol\times86.845\text{ }g\text{/}mol \\ \\ Mass=260.535\text{ }grams \end{gathered}[/tex]3 moles of LiBr to grams is 260.535 grams LiBr
