Water is pumped at a rate of 6L/h. How long will it take to pump 14L (Answer in hours and minutes)
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Water is pumped at a rate of 6L/h. How long will it take to pump 14L (Answer in hours and minutes)
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- A dirty lake was contaminated by a toxic substance. The lake has a volume of 1.2M liters of water with 9k kgs of the toxic substance. To solve this problem, they intentionally pour 1k liters of pure clean water per hour and releases the toxic water with the same rate. Assume that the lake can be safe to drink if 95% of the toxin is removed. Will the lake be safe to drink after a week? Why? Amount of toxic waste left after a month? How long before the lake only contains 45% of toxic waste?A tank contains 200 liters of fluid in which 20 grams of salt is dissolved. Pure water is then pumped into the tank at a rate of 4 L/min; the well-mixed solution is pumped out at the same rate. Find the number A(t) of grams of salt in the tank at time t.A dirty lake was contaminated by a toxic substance. The lake has a volume of 1.2M liters of water with 9k kgs of the toxic substance. To solve this problem, they intentionally pour 1k liters of pure clean water per hour and releases the toxic water with the same rate. Assume that the lake can be safe to drink if 95% of the toxin is removed. How long before the lake only contains 45% of toxic waste? Amount of toxic waste left after a month?
- An executive conference roomof a corporation contains 4500 ft3 of air initially free of carbon monoxide. Starting at time t = 0, cigarette smoke containing 4% carbon monoxide is blown into the room at the rate of0.3 ft3/min. A ceiling fan keeps the air in the room well circulated and the air leaves the room at the same rate of 0.3 ft3./min.Find the time when the concentration of carbon monoxide in theroom reaches 0.01%.A brine solution of salt flows at a constant rate of 7L/min into a large tank that initially held 100L of brine solution in which was dissolved 0.25kg of salt. The solution inside the tank is kept well stirred and flows out of the tank at the same rate. If the concentration of salt in the brine entering the tank is 0.05kg/L, determine the mass of salt in the tank after t min. When will the concentration of salt in the tank reach 0.02kg/L? Determine the mass of salt in the tank after t min.In the tank of 100 liters of brine containing 67kg totally dissolved salt. Pure water is allowed to run into the tank at the rate of 3 liters per minute. Brine runs out of the tank at rate of 2 liters minute. The instantaneous concentration in the tank is kept uniform by stirring. How much salt is in the tank at the end of 1 hour?
- A tank contains 200 L of fluid in which 30 grams of salt is dissolved. Brine containing 1 gram of salt per liter is then pumped into the tanks at a rate of 4 L/min; the well mixed solution is pumped out at the same rate. Find the A(t) or amount of salt in the tank at any time t.In a tank are 100 liters of brine containing 50 kg total dissolved salt. Pure water is allowed to run into the tank at the rate of 3 liters per minute. Brine runs out of the tank at the rate of 2 liters a minute. The instantaneous concentration in the tank is kept uniform by stirring. How much salt is in the tank at the end of one hour?Air containing carbon dioxide at a concentration of 0.05% is pumped into a room with a volume of 90000 m3 at a rate of 9000 m3 per minute. After the said air mixes homogeneously with the air in the room, it is pumped out of the room at the rate of 9000 m3 per minute. The initial air in the room contains carbon dioxide in a concentration of 0.2%. What is the % carbon dioxide concentration in the room after 20 minutes? Please choose one: a. 0.050% b. 0.057% c. 0.053% D. 0.070% to. 0.060%
- A tank contains 100 liters of brine, with 50 kg total dissolved salt. Saltwater, with a concentration of 0.5 kg per liter, is allowed to run into the tank at the rate of 3 liters a minute. Brine run out of the tank at the rate of 2 liters a minute. The instantaneous concentration in the tank is kept uniform by stirring. How much salt is in the tank at the end of one hour?A tank contains 20 kg of salt dissolved in 5000 L of water. Brine thatcontains 0.03 kg of salt per liter of water enters the tank at a rate of 25 Lmin. Thesolution is kept thoroughly mixed and drains from the tank at the same rate. Howmuch salt remains in the tank after half an hour?A brine solution of salt flows at a constant rate of 6 L/min into a large tank that initially held 100 L of pure water. The solution inside the tank is kept well stirred and flows out of the tank at a rate of 5 L/min. If the concentration of salt in the brine entering the tank is 0.4 kg/L, determine the mass of salt in the tank after t min. When will the concentration of salt in the tank reach 0.2 kg/L?