Chemistry, asked by ashwinanand257, 18 days ago

Please help me with the attached PNG.

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Answers

Answered by JenniferW

0

Answer:

20.169

Explanation:

((90.92*19.99)+(0.26*20.99)+(8.82*21.99)) / 100

= 1817.4908+5.4574+193.9518 / 100

= 2016.9/100 = 20.169

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