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Yuki888 [10]
3 years ago
13

Which example does not involve knowledge of chemistry?

Chemistry
2 answers:
Trava [24]3 years ago
6 0

I would honestly say C. All others have ingredients in them that makes them work, the combination of stuff to put out the fire, film is made from a certain material and drugs are an ovbious mixture. Looking at the stars is the only thing you don't need chemistry for.

iren [92.7K]3 years ago
4 0
C an astronomer identifying the stars
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3 years ago
Zn-64 = 48.63%
Ann [662]

Answer:

A = 65.46 u

Explanation:

Given that,

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A=\dfrac{48.63\times 64+27.90\times 66+4.1\times 67+18.75\times 68+0.62\times 70}{100}\\A=65.46\ u

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2 years ago
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