Please provide a complete solution for the following problems: Problem 1 (H.R. 13.6): You have 10lb of CO2 in a 20ft3 fire extinguisher tank at 30C. Assuming that the ideal gas law holds, what will the pressure gauge on the tank read in a test to see if the extinguisher is full? Problem 2 (H.R. 13.12): An average person's lungs contain about 5L of gas under normal conditions. If a diver makes a free dive (no breathing apparatus), the volume of the lungs is compressed when the pressure equalizes throughout the body. If compression occurs below 1L, irreversible lung damage will occur. Calculate the maximum safe depth for a free dive in sea water (assume the density is the same as fresh water)