Chemistry, 16.04.2020 20:41 Giovanni0312
A solid weak acid is weighed, dissolved in water and diluted to exactly 50.00 ml. 25.00 ml of the solution is taken out and is titrated to a neutral endpoint with 0.10 M NaOH. The titrated portion is then mixed with the remaining untitrated portion and the pH of the mixture is measured. Mass of acid weighed out (grams) 0.755 Volume of NaOH required to reach endpoint: (ml) 18.8 pH of the mixture (half neutralized solution) 3.51 Calculate the following 1) What is the pKa of the acid?
Answers: 3
Chemistry, 21.06.2019 17:00
This line graph compares the growth of plants that were kept in the sun for different amounts of time.a) on day 7, the plants kept in the sun for 3 hours were how tall? b) on day 7, the plants kept in the sun for 6 hours were how tall? c) on day 10, the plants kept in the sun for 9 hours were how tall? d) on day 11, the plant that was grown with 1 hour of sunlight was how tall? e) based on the graph, the plant grows best in what amount of sunlight?
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Chemistry, 22.06.2019 05:00
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This drawing shows a human body system. what is the primary function of this body system?
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Chemistry, 22.06.2019 10:00
Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption
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A solid weak acid is weighed, dissolved in water and diluted to exactly 50.00 ml. 25.00 ml of the so...
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