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In the electrolysis of aqueous potassium nitrate using inert electrodes, which one of the following species is oxidized?
Potassium ion
Nitrate ion
Water
Oxygen
Hydronium ion
Why is the answer water in this case? Wouldn't it be the nitrate ion since the potassium ion should be reduced to K from K+?
Then you precipitate the calcium ion in solution by adding sodium oxalate Na2C2O4. The precipitate is calcium oxalate, CaC2O4. You find that a sample of limestone weighing 128.3 mg gives 140.2 mg of CaC2O4. What is the mass % of calcium in the lim..
Calculate the partial pressure of O2 produced from 1.09L of 0.540M N2O5 solution at 45 ?C over a period of 18.0h if the gas is collected in a 11.0-L container. (Assume that the products do not dissolve in chloroform.)
The interactions between water molecules can be define as electrostatic or coulombic where areas of positive charge are attracted to areas of negative charge. Depict a cartoon of how three molecules might be arranged in space given this electrosta..
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Problem- 1) A particular radioactive isotope has a half life of 2.70 weeks. What fraction of the original sample is left after 56.7 days. 2) Which of the following statements is not true of electrolysis
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What is the molar solubility of Co(OH)2 in a buffered solution that has a pH of 10.43?
when 9.8 g of aluminum oxide (Al2O3) decomposes, how many grams of aluminum metal are produced?
To identify a diatomic gas () a researcher carried out the subsequent experiment: She weighed an empty 4.6- bulb, then filled it with the gas at 1.80 and 24.0 and weighed it again. The difference in mass was 9.5. Classify the gas.
The average concentration of strontium ion in seawater is 8.00 mg of strontium ion per kg of seawater. What is the molarity of the strontium ion if the density of the seawater is 1.025 g/mL.
what is the volume of 1 mole of Helium gas when the pressure is 1.47 atm and the temperature is 287 K.
How much heat is absorbed when 45.00 g of C(s) reacts in the pressence of excess SO2(g) to produce CS2(l) and CO(g) according to the following chemical equation?
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