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A 1.8338 g steel sample is dissolved in nitric acid. Nickel is precipitated using di methyl glyoxime, fully-protonated molecular weight 116. The mass of dried precipitate is 1.4459 g. What is the weight percentage of Ni in the steel sample?
When 4g of sodium hydroxide (NaOH) was dissolved in 100g of water, a value of 10C was obtained for ?T. Calculate the value (calories) for the heat of solution of 4g of NaOH.
What is the literature melting points for borneol and isoborneol. What would be expected for the melting point range of a mixture of the two isomers.
The pH of a certain solution is 4.5. What is the concentration of H+(aq) ions in the solution
What is the volume in mL of 7.27 g of acetone?
Calculate the pH during the titration of 25.9 mL of 0.618 M ammonia NH3 with 0.205 M HCl after 11.5 mL of the acid have been added. Kb of ammonia = 1.8 x 10-5.
What is the entropy change of the universe as a result of each of the following processes?- A 1-µF capacitor is connected to a 100-V electrochemical cell at O°C?
Briefly outline a procedure you could use to determine the HC2H3O2 concentration in a vinegar sample
how many valence electrons do each of the following elements have, and what are the specific valence electrons for each element
A polarization potential arises from a concentration difference between ions in the neighborhood of the electrode and those in the bulk of the electrolyte solution. Calculate the polarization potential in a copper electro-refining cell given the f..
Consider a 2430-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of the car is known to within 5.0 feet at the time of the measurement, what is the uncertainty in the velocity of the car?
Write a first draft summary summarizing the properties of each of the following groups Group 4A, Group 5A, Group 6A and Group 7A.
When a volcano erupts, 175g of steam at 100°C is released. How many kilojoules are lost when the steam condenses, cools, freezes, and cools to -5°C.
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