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A 20.0-rnL portion of pineapple juice was placed in a flask with 20 mL of 0.5M H2S04, Then 2 g of potassium iodide and 20.17 mL of 0.02001M potassium iodate were added to the sample. Titration with sodium thiosulfate required the use of 18.94mL of 0.07992M Na;>203' Find the molarity of ascorbic acid in the juice.
Determine the pressure (in atm) inside the can if a metal can of 1.00 qt contains 0.150 grams of Helium at a temperature of 20 degrees Celsius also explain Is this pressure greater or less than standard atmospheric pressure?
Supppose that a 1 L solution is made from 226 mg of citric acid (C6H8O7).What is the molarity of citric acid?
Using structural formula, how would you write the chemical reaction which explains how the product of the acidification reaction reacts with OH-. How would this explain the changes in solubility?
You have measured the absorbance for a vitamin sample to be 1.2 at a wavelength of 264. Can you use this reading to determine the INITIAL CONCENTRATION of your vitamin sample?
Assuming the earth is a perfect sphere with a radius of 6371 km and an atmosphere that extends from the surface to an altitude of 20 km determine the number of metric tons of the elements/compounds+
suppose you want to find out how many milliliters of 1.0 M AgNO3 are needed to provide 169.9g of pure AgNO3.
In a gas mixture, the partial pressures are argon 425 , neon 60 , and nitrogen 125 .What is the total pressure exerted by the gas mixture?
A 150 -g sample of water is cooled from 30 degrees C to 15 degrees C, thereby losing approximately 9420 J of heat. What is the change in E in J.
a solution is prepared by adding 1.60 grams of solid NaCl to 50ml of 0.100M CaCl2. what is the molarity of chlorine ion in the final solution? assume that the volume of the final solution is 50ml
Calculate the number of molecules inside the cell, which is 3.6um long and 1.2 um in diameter.
If 3.20mL of vinegar needs 41.5mL of 0.150 molarity NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.50qt sample of this vinegar?
Why might your sample not have the same melting range as either of the known compounds, given that it must be one of them?
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