Biology

Biology, 03.08.2019 08:00, viktoria1198zz

Calculate the concentration of each solution in ppt: a. 12 grams of salt per 2-liters of solution. b. 0.5 grams of sugar per 1-liter of solution.

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Mathematics, 23.08.2019 16:30, jdiel14

An 800 liter aquarium is being converted to salt water for a different species of fish. at timet 0, there is no salt in the aquarium, but a tap is opened and a salt solution with concentration 0.75 grams per liter is added to the aquarium, at a rate of 12 liters per minute. at the same time, salt water solution from the aquarium is drained out, also at 12 liters per minute. you can assume that the salt water in the aquarium is well mixed during this process, so the concentration in the tank is uniform (a) let s(t) be the mass of salt in the aquarium at time t, in grams. write a differential equation for the rate of change of the amount of salt in the aquarium over time, based on the rate salt is coming into and out of the aquarium (b) solve your differential equation from part (a), including the initial condition that there is no salt in the aquarium at time t0. (e) salt water fish require a concentration of 0.5 grams of salt per liter in the aquarium. how long does it take for the salt concentration in the aquarium to reach this level?

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Mathematics, 01.10.2019 19:30, rozzy5132

Initially 5 grams of salt are dissolved into 10 liters of water. brine with concentration of salt 5 grams per liter is added at a rate of 3 liters per minute. the tank is well mixed and drained at 3 liters per minute.let xbe the amount of salt, in grams, in the solution after t minutes have elapsed. find a formula for the rate of change in the amount of salt, dx/dt, in terms of the amount of salt in the solution x.dxdt=equation editorequation editorgrams/minutefind a formula for the amount of salt, in grams, after tminutes have elapsed.x(t)=equation editorequation editorgramshow long must the process continue until there are exactly 20 grams of salt in the tank?

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Mathematics, 24.10.2019 17:43, darrengresham999

Initially 5 grams of salt are dissolved into 10 liters of water. brine with concentration of salt 5 grams per liter is added at a rate of 3 liters per minute. the tank is well mixed and drained at 3 liters per minute.let xbe the amount of salt, in grams, in the solution after t minutes have elapsed. find a formula for the rate of change in the amount of salt, dx/dt, in terms of the amount of salt in the solution x.dxdt=equation editorequation editorgrams/minutefind a formula for the amount of salt, in grams, after tminutes have elapsed.x(t)=equation editorequation editorgramshow long must the process continue until there are exactly 20 grams of salt in the tank?

Answers: 3

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Mathematics, 30.10.2019 22:31, jamiria38

My turtle tank requires at least 2 grams of conditioning salt per liter. i test the water and notice it has approximately 1 g/l and the tank is about 100 liters. i make a very concentration salt solution with concentration 10 g/l of conditioning salt and start pouring a cup in the tank and remove a cup of well-mixed solution out. the rate of adding and removing solution is about 5 l/min. after how many full minutes will the solution have the correct concentration of conditioning salt.

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Calculate the concentration of each solution in ppt: a. 12 grams of salt per 2-liters of solution....

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