nFeFeFe = mFeFeFe/MFeFeFe = 112/56 = 2мольмольмоль
nFeFeFe = NFeFeFe/Na
NFeFeFe = nFeFeFe*Na = 2*6,02*10^23 = 1,204*10^24
Ответ: NFeFeFe = 1,204*10^24
nFeFeFe = mFeFeFe/MFeFeFe = 112/56 = 2мольмольмоль
nFeFeFe = NFeFeFe/Na
NFeFeFe = nFeFeFe*Na = 2*6,02*10^23 = 1,204*10^24
Ответ: NFeFeFe = 1,204*10^24