Question

the entire mass, 17.12 g, of the reactant br₂ is consumed by the reaction. calculate the amount (mol) br₂ in 17.12 g br₂. molar mass = 159.80 g/mol consider the units of mass and molar mass. 1st attempt recheck (2 of 5) incorrect

Explanation:

Step1: Recall the formula for amount in moles

The formula is $n=\frac{m}{M}$, where $n$ is the amount in moles, $m$ is the mass and $M$ is the molar - mass.

Step2: Identify given values

We are given that $m = 17.12\ g$ and $M=159.80\ g/mol$.

Step3: Substitute values into the formula

$n=\frac{17.12\ g}{159.80\ g/mol}$.

Step4: Calculate the result

$n = 0.1071\ mol$.

Answer:

$0.1071\ mol$