43.0 g al\nexpress your answer in moles to three significant figures.
43.0 g al\nexpress your answer in moles to three significant figures.
Answer
Explanation:
Step1: Identify molar - mass of Al
The molar mass of aluminum (Al) is $26.98\ g/mol$.
Step2: Use the mole - mass formula
The formula to calculate the number of moles ($n$) is $n=\frac{m}{M}$, where $m$ is the mass and $M$ is the molar mass. Given $m = 43.0\ g$ and $M=26.98\ g/mol$, then $n=\frac{43.0\ g}{26.98\ g/mol}$.
Step3: Calculate the number of moles
$n=\frac{43.0}{26.98}\ mol\approx1.59\ mol$
Answer:
$1.59\ mol$