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Question

Hi

I need help on this question. Can someone help me and explain ASAP?

Thank you.

Answer

1 mole of NH3  = 14+1×3, 17g of NH3 (molar mass) = 6 x 1023 NH3 molecules = 4 x 6 x 1023 N and H atoms

(4.25/17) mole of NH3  = 4.25g of NH3  = (4.25/17) x 6 x 1023 NH3 molecules  = (4.25/17) x 4 x 6 x 1023 N and H atoms = 6 x 1023 N and H atoms (Answer: C )#

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Thank you, SAHMom! 

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