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$12$: Nuclear Physics

Conceptual Question $30\mathrm{.}2$

$6$ of $20$

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Constants

Part A

Given that mHmH $=1\mathrm{.}007825$ uu$,$ is the mass of a hydrogen atom $1$H$1$H greater than, less than, or equal to $1/12$ the mass of a $12$C$12$C atom? Select the correct answer and explanation.

$1/12$ of the mass of a $12$C$12$C atom is less than $1$ uu$.$ Therefore, the mass of the hydrogen atom is less than $1/12$ of the mass of a $12$C$12$C atom$\mathrm{.}1/12$ of the mass of a $12$C$12$C atom is exactly $1$ uu$.$ Therefore, the mass of the hydrogen atom is greater than $1/12$ of the mass of a $12$C$12$C atom$\mathrm{.}1/12$ of the mass of a $12$C$12$C atom is exactly $1$ uu$.$ Therefore, the mass of the hydrogen atom is equal to $1/12$ of the mass of a $12$C$12$C atom$\mathrm{.}1/12$ of the mass of a $12$C$12$C atom is greater than $1$ uu$.$ Therefore, the mass of the hydrogen atom is greater than $1/12$ of the mass of a $12$C$12$C atom$\mathrm{.}1/12$ of the mass of a $12$C$12$C atom is exactly $1$ uu$.$ Therefore, the mass of the hydrogen atom is less than $1/12$ of the mass of a $12$C$12$C atom.

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