Some Basic Concepts Of Chemistry Question 179

Question: The weight of 1×1022 molecules of CuSO4.5H2O is [IIT 1991]

Options:

A) 41.59 g

B) 415.9 g

C) 4.159 g

D) None of these

Show Answer

Answer:

Correct Answer: C

Solution:

[ ∵ Molecular weight of CuSO4.5H2O =63.5+32+64+90 =249.5 ] 6×1023 molecules has weight =249.5gm

1×1022 molecules has weight =249.5×1×10226×1023

=41.58×10−1 =4.158

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