188.1 g au\nexpress your answer in moles to four significant figures
188.1 g au\nexpress your answer in moles to four significant figures
Answer
Explanation:
Step1: Recall molar - mass of Au
The molar mass of gold (Au) is $M = 196.97\ g/mol$.
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 $m = 188.1\ g$ and $M=196.97\ g/mol$, then $n=\frac{188.1\ g}{196.97\ g/mol}$.
Step3: Calculate the number of moles
$n=\frac{188.1}{196.97}\ mol\approx0.9540\ mol$
Answer:
$0.9540\ mol$