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A standard NaOH solution is contaminated with Na2CO3. In the titration of 50.00 mL of .1002 M HCl solution, 32.00 and 32.50 mL of base are required to reach the methyl orange and Phenolpthalein end points, respectively. calculate the grams of NaOH and Na2CO3 in one liter of solution.
Calculate the amount of heat released when 5.3 moles of steam at 100 degrees celscus turns to water at the same temperature
8.20 grams of solute in 861 grams of water lower the freezing point to -0.430 degree celsius calculate the molecular mass of the nonionic solutes.
A gas evolved during the fermentation of sugar was collected at 22.5 c and 702 mmhg. After purification it's volume was found to be 25.0 l . How many moles of gas were collected.
A rubber balloon was inflated with helium gas and floated in the air. The next day, the balloon was somewhat smaller and no longer floated.
Write the IUPAC name of the expected product(s) for the oxidation of each of the following compounds. A. 2-pentanol
solution is diluted to a total volume of 278 mL. A 139-mL portion of that solution is diluted by adding 155 mL of water. What is the final concentration?
The single proton that forms the nucleus of the hydrogen atom has a radius of approximately 1.0x10^- 13 cm. The hydrogen atom itself has a radius of approximately 52.9 pm.What fraction of the space within the atom is occupied by the nucleus?
An iron ore sample is a mixture of Fe2O3 and several impurities. A 752. g sample of the impure iron ore is heated with excess carbon.
A reaction was conducted in benzene as the solvent. Because the reaction was very exothermic, the mixture was cooled in a salt-ice bath. This was a bad choice. Why?
It takes 485 J of energy to raise the temperature of 104.1 g mercury from 20.0°C to 53.5°C. Calculate the specific heat capacity and the molar mass capacity of mercury.
A solution that has a K+ concentration of 5.00ppm is to be prepared from solid KCl. Assuming a solution density of1.000g/mL how many miligrams of KCl must be added to make 1.00L solution?
Determine the enthalpy change if The heat released when 24.9 grams of Potassium K reacts with excess H2O water is 124 kilo joules?
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