At high altitudes, mountain climbers are unable to absorb a sufficient amount of O₂ into their bloodstreams to maintain a high activity level. At a pressure of 1 bar, blood is typically 95% saturated with O₂, but near 18,000 feet where the pressure is 0.50 bar, the corresponding degree of saturation is 71%. Assuming that the Henry’s law constant for blood is the same as for water, calculate the amount of O₂ dissolved in 1.00 L of blood for pressures of 1 bar and 0.500 bar. Air contains 20.99% O₂ by volume. Assume that the density of blood is 998 kg m⁻³.