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Find the no. Of molecules of …

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Find the no. Of molecules of 4.25g ammonia

    • Posted by Surya Pra 6 years, 11 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Payal Singh 6 years, 11 months ago

    Molar mass NH3 = 14+3 = 17g/mol

    4.25g = 4.25/17 = 0.25 mol

    NH3 1mol = 6.022 {tex}\times {/tex}1023 molecules

    0.25 mol = 0.25 {tex}\times{/tex}6.022 {tex}\times {/tex}1023

    Number of molecules = 1.51 {tex}\times{/tex}1023 

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