$1 đvC = 1,6605.10^{-24}(gam)$
$m_K = 39.1,6605.10^{-24} = 64,7595.10^{-24}(gam)$
$m_{2Cu} = 2.64.1,6605.10^{-24} = 212,544.10^{-24}(gam)$
$m_{4S} = 4.32.1,6605.10^{-24} = 212,544.10^{-24}(gam)$
$m_{3O} = 3.16.1,6605.10^{-24} = 79,704.10^{-24}(gam)$
$m_{6P} = 6.31.1,6605.10^{-24} = 308,853.10^{-24}(gam)$