How many silver atoms can be produced if 0.00350 g of Cu are reacted with excess AgNO3 according to  Cu + 2AgNO3 → 2Ag + Cu(NO3)2(aq)? ?

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  • 3 weeks ago

    (0.00350 g Cu) / (63.5463 g Cu/mol) x (2 mol Ag / 1 mol Cu) x

    (6.022 x 10^23 atoms/mol) = 6.63 × 10^19 atoms Ag

  • david
    Lv 7
    3 weeks ago

    find atomic mass of Cu (on periodic table) and use this to convert mass of Cu to atoms of Cu  === 

    0.00350g X (1mole/at. mass) X (6.022x10^23 atoms/mole)  

      =  atoms Cu

    ===========================

    notice there are 2 atoms Ag produced from 1 atom Cu ==  so just multiply by 2

       atoms Cu X 2  =  atoms Ag

     ... now just use a calculator

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