Chemistry, 14.10.2019 21:30 Affousietta
The spent acid from a nitration process contains 33% h2so4, 36% hno3 and 31% h2o. this is to be strengthened by the addition of concentrated h2so4 containing 95% h2so4 and nitric acid containing 78% hno3. the final strengths of mixed acid solution contains 40% h2so4 43% hno3 and the rest water. calculate : a. the amount of spent acid
b. the amount of concentrate h2so4
c. thr amount of concentrate hno3 to be mixed to produce 1500 kg of tge desired acid
Answers: 3
Chemistry, 22.06.2019 13:00
Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.
Answers: 1
Chemistry, 22.06.2019 17:00
In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added
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Chemistry, 22.06.2019 21:30
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Chemistry, 23.06.2019 00:30
Quickly what are the following of organisms that existed over a wide area but only for a limited time period called a.soft fossils b.mold fossils c.index fossils d.trace fossils
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The spent acid from a nitration process contains 33% h2so4, 36% hno3 and 31% h2o. this is to be stre...
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