Answers: 3
Chemistry, 21.06.2019 15:10
Atank contains 240 liters of fluid in which 10 grams of salt is dissolved. brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 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.
Answers: 3
Chemistry, 23.06.2019 00:00
Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27ยฐc. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 ยฐc. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3
Answers: 3
Are metal ions larger or smaller than the neutral atoms they came from...
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