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Question

If atomic mass of sodium is 23 a.m.u., then the mass of 3.01 x 1023 sodium atoms is:


A

11.5 g

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B

0.5 mol

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C

23 g

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D

11.5 kg

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Solution

The correct option is A

11.5 g


Mass of 6.022 X 10 23 atoms (1 mole) of sodium = 23 g


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