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natita [175]
3 years ago
10

Pls help question 2 ill attach a picture​

Chemistry
1 answer:
Finger [1]3 years ago
8 0

Answer:

X 154

Check solution in explanation

Explanation:

Average atomic mass = ( mass 1× abudance) + ( mass 2× abudance)+ ( mass 3× abudance) / 100

(149×13.8)+(152×44.9) +(154×41.3)/100

2056.2 + 6824.8 + 6360.2/100

=152.412

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