Question

What is the mass of 1.20×10^23 atom of cobalt.(at mass of Co+58.9u)​

Answer 1

Answer:

Answer:

Explanation:

1 mole = 58.9 = 6.022*10^23

1.20×10^23  contains  1.20×10^23  *58.9/6.022*10^23

= 11.7 u of cobalt

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Explanation: