Find the no. Of molecules of …
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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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