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A solution is made by mixing 15.0 g of NaOH and 71.0 mL of .19 M HNO3. Calculate the concentration of Na+ ion remaining in solution.
One liter of a buffer solution is prepared by dissolving 0.115 mol of NaNO2 and 0.070 mol of HCl in water. What is the pH of this solution? If the solution is diluted two fold with water, what is the pH?
2 K + Cl2 ---> 2 KCl How many grams of KCl is produced from 2.50 g of K and excess Cl2. From 1.00 g of Cl2 and excess K?
The below table lists pressure and volume measurements for air in a cylindrical piston of an air compressor. The variables may be assumed related by: PV^k=C
The entropy of sublimation of a certain compound is 7.2 J / K mol at its normal sublimation point of 76 C. Calculate the vapour pressure in torr of the compound at 28 C.
the Ideal Gas Law to calculate the pressure of the vapor at 88 °C; at 66 °C. b) Will condensation occur at 88 °C; 66 °C? Explain. c) On the basis of your answers in a) and b), predict the pressure exerted by the water vapor in the flask at 88 °C; ..
What chemical tests might be used to distinguish between pentanal and 2- pentanone; between benzyl alcohol and diphenylmethanol?
In the 1980s, there was an international agreement to destroy all stockpiles of mustard gas, ClCH2CH2SCH2CH2Cl. When this substance contacts the moisture in eyes, nasal passages, and skin
when aluminum is heated in oxygen, aluminum oxide is formed. What weight of the oxide can be obtained from 25.0g of the metal.
Based on the procedure that you used in this experiment and using the same molar quantaties of reactants, develop a procedure that would be suitable for the preparation of isobutyl propionate.
How many grams of potassium chlorate decompose to potassium chloride and 510. mL of O2 at 128°C and 652 torr?
Determining System Equilibrium, A one-litre cylinder at 458'C is found to contain 0.36 moles of HI (g), 0.15 moles of I 2(g), and 0.18 moles of H2(g). Is this system at equilibrium?
The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 295 mL measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure of water at 25°C = 0.0313 atm.)
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