QUESTION 2 What is the mass balance of Reservoir Y? (round to the nearest whole number) (note: the unit for mass balance is units/year) RESERVOIRS: FLOWS: Reservoir X): 90,000,000 units Flow a) X) Z): 1,000 units/year Reservoir Y): 900,000 units Flow b) Z) X): 900 units/year Reservoir 2): 10 units Flow c) Z) Y): 100 units/year Flow d) Y) X): 110 units/year QUESTION 3 What is the mass balance of Reservoir Z? (round to the nearest whole number) (note: the unit for mass balance is units/year) RESERVOIRS: FLOWS: Reservoir X): 90,000,000 units Flow a) X) Z): 1,000 units/year Reservoir Y): 900,000 units Flow b) Z) X): 900 units/year Reservoir Z): 10 units Flow c) Z) Y): 100 units/year Flow d) Y) X): 110 units/year QUESTION 4 What is the net mass balance of the entire system (i.e, the sum of each of reservoir's mass balance)? (round to the nearest whole number) (note: the unit for mass balance is units/year) RESERVOIRS FLOWS: Reservoir X): 90,000,000 units Flow a) X) Z): 1,000 units/year Reservoir Y): 900,000 units Flow b) Z) X): 900 units/year Reservoir Z): 10 units Flow c) Z) Y): 100 units/year Flow d) Y) X): 110 units/year QUESTION 5 What is the residence time of Reservoir Y?(round to the nearest whole number) (note: the unit for residence time is years) RESERVOIRS FLOWS: Reservoir X): 90,000,000 units Flow a) X) Z): 1,000 units/year Reservoir Y): 900,000 units Flow b) Z) X): 900 units/year Reservoir Z): 10 units Flow c) Z) Y): 100 units/year Flow d) Y) X): 110 units/year QUESTION 6 What is the residence time of Reservoir Z? (round to the nearest hundreths place (l.e., 2 decimal places)) (note: the unit for residence time is years) RESERVOIRS FLOWS: Reservoir X): 90,000,000 units Flow a) X) Z): 1,000 units/year Reservoir Y): 900,000 units Flow b) Z) x): 900 units/year Reservoir Z): 10 units Flow c) Z) Y): 100 units/year Flow d) Y) X): 110 units/year