the answers are in bold i just need the work for part a and part b

Scuba divers use pressurized tanks that contain a mixture of oxygen and helium (not nitrogen, which is in regular air). The reason is that the solubility of N2 in blood is high and if a diver breathes nitrogen under high pressure, the nitrogen gas bubbles out of their blood when the diver returns to the surface. The gas bubbles get stuck in joints and muscle and cause intense pain which we call the "bends". a. A diver has a N2 solubility of 5.6104mol/L at the surface of the water (37C and atmospheric 0.80atm partial pressure). If the diver is breathing a nitrogen-oxygen mixture in their tank, calculate the solubility of N2 at 4.0 atm partial pressure (which is a 100ft dive). Ans: 2.8103M When the diver returns up to the surface, the extra N2 in their blood bubbles out. If the diver contains 5L of blood, how many liters of N2 gas is released? (at 37C and 1 atm). Ans: 0.28L