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5 votes
Can anyone solve this please. I need this fastly

Can anyone solve this please. I need this fastly-example-1
User Beertastic
by
7.6k points

1 Answer

5 votes

Answer:

Average atomic mass = 63.3896

Step-by-step explanation:

Step 1: Find how much Cu-65 we have

1 - Amount of Cu-63 = Amount of Cu-65

1 - 0.6915 = Amount of Cu-65

Amount of Cu-65 = 0.305

Step 2: Find the average atomic mass of Cu

(0.6915 x 63) + (0.305 x 65) = Average atomic mass

(43.5645) + (19.825) = Average atomic mass

63.3895 = Average atomic mass

Therefore the average atomic mass of Cu is 63.3895 atomic mass units

User Jacob Penney
by
8.4k points
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