Question

The percentage by mass of br in the compound albr3 is closest to:

Answer 1

Step-by-step explanation:

1 Al = 26.98 AMU

3 Br = 239.7 AMU

AlBr3 = 266.69 AMU

Al = (26.98)/(266.69) = 10.1%

Br3 = (239.7)/(266.69) = 89.9%