Question

an element have weight 11 ,12 ,13, unit their percentage in nature is 85 , 10 , 5 respectively calculate average atomic weight ​

Answer 1

HEY MATE HERE  IS YOUR ANSWER>>>>

AVERAGE ATOMIC WEIGHT IS >>>

$=\frac{11*85+12*10+13*5}{85+10+5} \\\\= \frac{935+120+65}{100} \\\\=\frac{1120}{100}\\\\ \\\\\\=11.2$

Answer 2

Answer:

heya mate

11×85+12×10+13×5/85+10+5

935+120+65/100

1120/100

11.2

hope it helps u