Q:1 A pyrite mineral containing 60% FeS2 contaminates the water of a 1000 m3 reservoir; If the conditions for total dissolution are favourable, how much of the mineral should be in contact with the water so that the total iron concentration in the water equals 0.5 mg/l? Dissolved sulfur is oxidized to sulfuric acid, what is the concentration of acid in the reservoir? (4 points)

Q:2 The constant Kp for the dissociation of dinitrogen tetraoxide N204 at 25C. is equal to 0.141at. Calculate at said temperature the concentration of NO2 in equilibrium with 0.0072 moles of N204 existing in a container with a capacity of 0.250 liters. Find the pressure and density of the gas mixture. Reaction: N204 = NO2 (4 points)

please, answer both questions Q:1 and Q:2, both questions are related, please answer both please, please do not skip steps in the solutions, Explained in detail everything you do to reach the solution. help me thanks