Sum of number of proton electron and neutron in 12 gram of carbon
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The atomic weight of carbon is 12.011 amu. So, 12 grams is nearly one mole - so the number of each is nearly 6x Avogadro's Number. Or.
6* (12 grams)(Na)/(12.011 amu) = 6* 6.0166*10^23=3.61*10^24.
6* (12 grams)(Na)/(12.011 amu) = 6* 6.0166*10^23=3.61*10^24.
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