2. "A gardener has a 20% and a 70% solution of an insecticide. How much of...
How many liters of a 10% alcohol solution must be mixed with 70 liters of a 70% solution to get a 50% solution?
Four different types of insecticides are used on strawberry plants. The number of strawberries on each randomly selected plant is given below. Insecticide 1 Insecticide 2 Insecticide 3 Insecticide 4 6 5 6 6 7 7 5 5 6 5 4 4 5 4 3 4 7 5 4 5 6 6 4 3 Does the data suggest that any of these insecticides yield a mean number of strawberries per plant that is different from the others? Use a 5%...
A radiator has 11 L of a 20% antifreeze solution. How much must be drained and replaced by pure antifreeze to bring the concentration level up to 40%? L of the 20% should be drained and replaced by pure antifreeze.
How much 0.7MKI solution in liters will completely precipitate the Pb2+ in 2.1L of 0.18MPb(NO3)2 solution?
please circle both Answers and label ______litters and 20% acid solution ___litters of 60% acid solution. I had to re-ask i dont get this persons solution wwill like thank you Question b- UI 22 Sep U How many liters each of a 20 % acid solution and a 60 % acid solution must be used to produce 80 liters of a 40 % acid solution? (Round to two decimal places if necessary.) Keypad Answer How to Enter) 5 Points liters...
If Johnny ran 20 kilometers in 2 hrs (bw = 70 kiloponds) how much work did he perform in joules.?
Confusing. Help Pls. How much water must be added to 30 liters of a 75% salt solution to reduce it to 15%?
How much of 95% ethanol must be mixed with 20% ethanol to make 1 pint of a 40% ethanol solution?
Malathion, an organophosphate parasympathomimetic, is an insecticide of relatively low human toxicity. It has been widely used in aerial spray to combat fruit fly and West Nile virus. The photodegradation of this insecticide can be described by first-order reaction with a half-life of 15 hr under sunlight. If a tank of malathion solution was exposed to sunlight from 8:00 am to 2:00 pm on a spray day, what is (a) the first-order rate constant in hr, and (b) the percentage...
Mike needs to make 2 liters of a 0.3 M NaOHsolution for an experiment. He has a 1.2 M stock solution. How much stock solution must he dilute to reach his desired 2 liter, 0.3 M final solution? Select the correct answer below: 0.18 L 0.5 L 1.2 L 8.0 L