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10^(22) atoms of an element X are found ...

`10^(22)` atoms of an element X are found to have a mass of 930 mg. Calculate the molar mass of the element 'X'.

Text Solution

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Molar mass of an element is the mass of Avogadro.s number of atoms. 1022 atoms of the element have mass
`= 930 mg = 930/1000 g = 0.930 g`
`therefore 6.022 xx 10^(23)` atoms will have mass
`=0.930/10^(22) xx 6.022 xx 10^(23) g= 56.0 g`
`therefore` Molar mass of the element `= 56 g mol^(-1)`
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