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How many atoms are there in 100 amu of h...

How many atoms are there in 100 amu of helium , if atomic mass of helium is `4` amu ?

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Number of He atoms = `("mass of helium")/("mass of 1 atom of helium") = (100 "amu")/(4 "amu") = 25` .
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BHARATI BHAWAN (ENGLISH)-ATOMS , MOLECULES AND IONS -Numericals
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