Question

given 83.2 g of babr₂, determine the number of moles of babr₂.
1 mol babr₂ = 297.13 g babr₂
? mol babr₂ = 83.2 g babr₂
round your answer to two decimal places.

Explanation:

Step1: Set up the conversion formula

The formula to convert grams to moles is \(n=\frac{m}{M}\), where \(n\) is the number of moles, \(m\) is the mass in grams, and \(M\) is the molar mass. Here, \(m = 83.2\space g\) and \(M=297.13\space g/mol\).

Step2: Calculate the number of moles

Substitute the values into the formula: \(n=\frac{83.2}{297.13}\).
Using a calculator, \(n\approx0.28\) (rounded to two decimal places).

Answer:

\(0.28\)