Can A Bicycle Inner Tube Filled With Co2 Be Used To Float A Child Weighing 40 Kg?

Can A Bicycle Inner Tube Filled With Co2 Be Used To Float A Child Weighing 40 Kg? The inner tube has no significant effect on max pressure. The valve stem area is the only area sensitive to pressure, and in general the valve can withstand 200 PSI or better. How much do bike tubes weigh?