#include <stdio.h> 
 
int  main( )  { 
    double  massa,  massa_molar,  jumlah_atom; 
    const  double  AVOGADRO =  6.022e23 ; 
 
    printf ( "=== Program Menghitung Jumlah Atom ===\n " ) ;      printf ( "Masukkan massa zat (gram): " ) ;   
    printf ( "Masukkan massa molar zat (g/mol): " ) ;      scanf ( "%lf" ,  & massa_molar
) ;   
    // Hitung jumlah atom 
    jumlah_atom =  ( massa /  massa_molar)  *  AVOGADRO; 
 
    printf ( "\n Jumlah atom dalam %.3f gram zat adalah: %.3e atom\n " ,  massa
,  jumlah_atom
) ;   
    return  0 ; 
} 
 
 
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