just number 1 pls. help me. oh and answers should be expressed in the 4th decimal place. TYIA What is the normality of a solution that contains 2.5 grams of Na:S2O3.5H20 in500 ml water?1.2.The amount of phosphorus present in a sample at a given time is given by thefollowing equation:Q, = Qoe-0.031What percent of the initial amount of phosphorus is left after 25 days of decay?If there are 37 kg of the element left after 25 days,in prob 3, what was the initialamount of the element?3.A sample of pure oxalic acid (H2C204 2H2O) weighs 0.2000 gram and requires30.12 ml of potassium hydroxide solution for complete neutralization. What is thenormality of the KOH solution?4.

Normality is defined as the gram equivalent weight of solute dissolved in one liter of solution.…

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1. What is the normality of a solution that contains 2.5 grams of Na:S2O3.5H2O in 500 ml water?

Chemistry: An Atoms First Approach

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Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter7: Chemical Energy

Section: Chapter Questions

Problem 134IP: On Easter Sunday, April 3, 1983, nitric acid spilled from a tank car near downtown Denver, Colorado....

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just number 1 pls. help me. oh and answers should be expressed in the 4th decimal place. TYIA

What is the normality of a solution that contains 2.5 grams of Na:S2O3.5H20 in
500 ml water?
1.
2.
The amount of phosphorus present in a sample at a given time is given by the
following equation:
Q, = Qoe-0.031
What percent of the initial amount of phosphorus is left after 25 days of decay?
If there are 37 kg of the element left after 25 days,in prob 3, what was the initial
amount of the element?
3.
A sample of pure oxalic acid (H2C204 2H2O) weighs 0.2000 gram and requires
30.12 ml of potassium hydroxide solution for complete neutralization. What is the
normality of the KOH solution?
4.

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