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AVprozaik [17]
3 years ago
9

When was copper discovered?​

Chemistry
1 answer:
Vesna [10]3 years ago
3 0

Answer:

9000 BC

Explanation:

Although various copper tools and decorative items dating back as early as 9000 BCE have been discovered, archaeological evidence suggests that it was the early Mesopotamians who, around 5000 to 6000 years ago, were the first to fully harness the ability to extract and work with copper.

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I got it

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Thank you friend

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**98 POINTS**
Andrei [34K]

OP already did it - CONGRATS!!

here are the steps 2 get the same ans:

(NH4)2 CO3 has 2x N, 8x H, 1x C and 3x O per molecule

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so by ratio n proportion, 1.00g will have 1x8/96 = 1/12g = 0.083g of H

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