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Natali5045456 [20]
3 years ago
14

Can someone please help me with this Chem lab?

Chemistry
1 answer:
Jlenok [28]3 years ago
4 0

Answer:

sooo   dificult

Explanation:

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Gold/Atomic mass

196.96657 u ± 0.000004 u

Potassium/Atomic mass

39.0983 u ± 0.0001 u

Francium/Atomic number

87

Copper/Atomic mass

63.546 u ± 0.003 u


Bromine/Atomic mass

79.904 u ± 0.001 u


Arsenic/Atomic number

33


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