Question

A flask contains 0.545 mol of liquid bromine, Br2. Determine the grams of bromine molecules present in the flask.

Answer 1

Answer:

when asking this question they are looking for the number of Br2 therefore .5 mol

.5*6.022*1023 molecules which equals 3.011*1023 molecules

Explanation:

Its correct

Answer 2

Molar mass of Br_2=160g/mol

No of moles=0.545

Mass

• moles×Molar mass
• 0.545(160)
• 87.2g