A 300 gallon tank initially contains 90 gallons of brine containing 400 Ibs. of salt. Brine containing 1 lb. of salt per gallon enters the tank at 4gal/s, and the well-mixed brine flows put of the tank at 1 gal/s. How much salt will the tank contain when it is full of brine?

Q: How many liters of each 20% (v/v) alcohol and 80% (v/v) alcohol must be mixed to yield 20 liters of…

A: We are given two percentages of alcohol that are 20% and 80%. We have to produce 20 liters of 50%…

Q: Mildred, a pharmacist, was required to prepare 10 L of a 40% alcohol solution by mixing the flowing.…

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Q: A tank is filled with 400 gallons of brine with 25 % dissolved salt. 5 gallons of 20% salt solution…

A:

Q: A tank is filled with 400 gallons of brine with 15 % dissolved salt. 10 gallons of 20% salt solution…

A: Given datavolume of tank=400 gallonsAmount of salt=15% of 400=400*15100=60

Q: A tank is filled with 300 gallons of brine with 10 % dissolved salt. 5 gallons of 20% salt solution…

A: Let the density of the salt be ρ lb./gallon and the mass of salt be Q(t) in the tank after t…

Q: The beaker contained 400 mL of a solution that was 20% alcohol. How many milliliters of a 50%…

A: This question is based on percentage.

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A: According to the question, the maximum strength Tylenol has 500 mg of acetaminophen per tablet. So,…

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Q: The dosage of a cold medication is 2 mg for every 60 lb of body weight. How many milligrams of this…

A:

Q: A tank originally contains 380 litres of brine holding 450 N of dissolved salt. Eight es/min of…

A: Given: A tank contain 380 litres of brine and of dissolved salt is  450 N. And, The rate of entering…

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Q: A physician orders Pitocin (oxytocin) 2 units in 1L of D5W. 7. How many units are in 100 mL of the…

A: For this problem, we know that one litre is equal to 1000mL. According to this we can calculate.

Q: How much water must be added to 10 L of a 40% acid solution to dilute it to 30% acid solution?

A: Given: 10 L of a 40% acid solution

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A: Let the amount of  80% antifreeze required be x then the equation of concentration becomes: 0.8(x)…

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Q: Calculate the amount of Lidocaine required to compound 1 ounce of 2% (w/w) lidocaine dental gel.…

A: Solution:Part-IGiven:- Lidocain dental gel = 1 ounce                                             =…

Q: What quantity of pure acid muc=st be added to 2 gal of 30% acid solution to product a 60% acid…

A:

Q: A pot contains 6 L of brine at a concentration of 120 g/L. How much of the water should be boiled…

A: Given, A pot contains 6 L of brine at a concentration of 120 g/L.

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Q: How many mililiters of pure chocolate must be added to 150 ml of chocolatetopping that is 50%…

A: Let x mililiters of pure chocolate must be added So the total amount of the mixture is (x+150) ml.…

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A: Cylinder A: Diameter = 12 inches radius = 6 inches Height = 13 inches   The volume of cylinder A: VA…

Q: How many liters of a 40% acid mixture and how many liters of a 10% acid mixture should be mixed to…

A: Let x liters of 40% acid mixture be needed and y liters of 10% acid mixture be needed. This gives

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A: Consider the needed amount is 60 ml of the 45% of the solution and the available amount is 35% and…

Q: A patient needs 2mg of a medication. The Australian Injectables Drug Handbook states that each gram…

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Q: How much water must be evaporated from 17 qt of a 45% antifreeze solution to produce an 85%…

A: Given,       Water must be evaporated from 17 qt of a 45% antifreeze solution to produce an 85%…

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Q: A biologist has a 40%  Solution of the same plant nutrient. how many cubic centimeters of each…

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Q: a one cup serving of fat free skim milk contains 8 fluid ounces, that one cup of milk also provides…

A: As it is mentioned in the question that the milk is fat free skim milk So the content of fat is…

Q: If a mixture calls for 320 fluid ounces of ethanol, how many quarts is that?

A: Ethanol means ethyl alcohol It is colourless flammable liquid.

Q: An empty Boeing 747 weighs about 175 tons. How much does it weigh in ounces? If this same Boeing 747…

A: Part (a) - Weight of Boeing 747 = 175 tonsWe know that,1 ton = 32000 ouncesThen,175 ton = 175×32000…

Q: A patient needs 4mg of a medication. The Australian Injectables Drug Handbook states that each gram…

A: The patient needs a medication of 4mg and as per Australian Injectables Drug Handbook 1 gram value…

Q: A ballon has 4 moles of gas and occupies 50 L. What is the new volume if 2 moles of gas are added to…

A: Given data, Number of moles of gas, N = 4 The volume occupies by the Gas, V = 50 L.

Q: Last year, a 20-acre field yielded 2,700 bushels of corn. At the same rate, how many acres would be…

A: Total bushels of corn are yield in 20 acre field is 2700.

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A: Given that, T=LH2254 ------(1) T=4 inches H=10 feet To find Crushing Load L:

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Q: How much water should be added to 1 gallon of pure antifreeze to obtain a solution that is 60%…

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Q: A hose fills a hot tub at a rate of 4.11 gallons per minute. How many hours Will it take to fill a…

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Q: A hospital worker combined 2 fluidounces of a povidone-iodine cleaner, 7.5% w/v, with 4 fluidounces…

A: A hospital worker combined 2 fluidounces (7.5% w/v) of  a povidone-iodine cleaner with 4…

Q: How much water should be evaporated from 40% v/v alcohol in order to prepare 3000 ml of 60% ( v/v)…

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Q: Suppose that 8% of a solution is fertilizer by volume and the remaining 92% is water. How much…

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Q: A 76.00 pound flask of mercury costs $127.50. The density of mercury is 13.534 g/cm3 Find the price…

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Q: How many milliliters of a  3.2%  bleach solution must be mixed with a  20%  bleach solution to…

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Q: I have a large pot containing 6 liters of soup broth. If I divide the soup broth into 3lg liters for…

A: Solution...

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.