400 450 400 400 400 400 450 450 450 450 500 550 500 550 500 550 500 550 500 550 600 650 600 650 600 650 600 700 650 600 650 700

Question

400 450 400 400 400 400 450 450 450 450 500 550 500 550 500 550 500 550 500 550 600 650 600 650 600 650 600 700 650 600 650 700 700 750 700 750 700 750 750 750 oxygen hydrogen nitrogen carbon

Kunduz · Accepted Answer

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