Question

Number of grams of bromine that will completely react with 5.0 g of pent-1-ene is ______ × 10–2 g. (Atomic mass of Br = 80 g/mol) [Nearest integer]

Answer 1

$\frac {5}{70}$ moles of pentene will react with $\frac {5}{70}$ moles of $Br_2$
$= \frac {5}{70} × 160$
$= 11.43\ g$
$= 1143×10^{-2} g$

So, the answer is $1143$.