aFany1Mocatxx
aFany1Mocatxx aFany1Mocatxx
  • 23-06-2016
  • Chemistry
contestada

The molar mass of magnesium (Mg) is 24.30 g/mol. There are 6.02 x 10^23 atoms in 1 mol. How many atoms are present in 48.60 g of Mg?

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JoshEast
JoshEast JoshEast
  • 24-06-2016
Atoms of Mg  =  mol  *  L
   
     mol of Mg =  [tex] \frac{MASS}{MOLAR MASS} [/tex]
 
                      =  [tex] \frac{48.60 g}{24.30 g / mol} [/tex]
    
                      =  2 mol

∴ atoms of Mg  =  2 mol  *  ( 6.02  x  10²³)
                         =  1.204  x  10²⁴


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