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How many gram of neutron is …

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How many gram of neutron is present in 10 gram sample of heavy water

Posted by M M 3 years, 9 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 3 years, 9 months ago

Heavy water consists of deuterium instead of hydrogen . Deuterium atom consists one proton and one neutron. Hence, there are total 10 neutrons in a heavy water molecule (2 from deuterium and 8 from oxygen).
Number of heavy water molecules = 10/20 {tex}{{N}{A}}{/tex} = {tex}0.5 {{N}{A}}{/tex}
Mass of neutrons present in 0.5 mol of heavy water = {tex}10/{{N}{A}} x 5 {{N}{A}} = 5 g{/tex}

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