ICSE Class 10 Chemistry 2017 Solved Paper

Question : 31 of 86

Marks: +1, -0

Calculate the number of gram atoms in 4.6 grams of sodium

( {\Na}=23)

Solution:

23 {\gm}

{\Na}=1 {\gm}

atom

4.6 {\gm} \;\text " of "\; {\Na}\;=\;{1}/{23} × 4.6

\;=0.2 {\gm} \;\text " atom "\;

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