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After doing Ka calculations, you may wish you had an aspirin. Aspirin is a weak acid with Ka=3.27 x 10^-4 for the reaction. HC9H7O4(aq) + H2O(l) image from custom entry toolH3O(aq) + C9H7O4(aq) Two aspirin tablets, each containing .325 g aspirin(along with a nonreactive "binder" to hold the tablet together), are dissolved in 200.0 mL of water. Calculate the pH of the solution.
A large gas flask is found to weigh 143.567 g. it is then filled with gas to a pressure of 735 torr at 31 C and found to weigh 1067.9 g (the density of water is 31 C is 0.997 g/mL). Assuming that the ideal gas equation applies, calculate the molar..
Calculate the standard (25°C and 1 atmosphere) heat of reaction in gram mole of the first reactant on the left-hand side of the reaction equation of the following reactions a. CH4 (g) + 2 O2 (g) ? CO2 (g) + 2 H2O (l) b. CO2 (g)+ H2 (g) ? CO (g) + ..
Baking soda decomposes into sodium carbonate, water vapor and carbon dioxide. how many liters of gas will be produced at 155 C and 753 torr by the complete decomposition of 3.2 g of sodium bicarbonate?
What volume of H2 gas (in L ), measured at 742 mmHg and 84C, is required to synthesize 25.8g of CH3OH?
When a 0.250 gram sample was studied by combustion analysis, 0.451 grams of CO2 and 0.0617 grams of H2O was formed. Calculate the molecular formula.
If equal masses of both metals were transferred to equal volumes of water in seperated graduated cylinders, which graduated cylinder would have the greatest volume change. why.
How do intermolecular attractions influence the solubility of a solute in a particular solvent
The rate law for the reaction NO(g) + O3(g) ? NO2(g) + O2(g) is first-order in NO and O3, and second-order overall. Write the complete rate law for this reaction.
Calculate the density of the sample. Show all work and use significant figures and units.
biological organisms live at great depths in the ocean and they have adapted their bodies to survive at extreme
a swimming pool 20.0 m ? 12.5 m is filled with water to a depth of 3.71 m. if the initial temperature of the water is
A 643 mL gas sample at STP is compressed to a volume of 187 mL, and the temperature is increased to 33?C. What is the new pressure of the gas in Pa? Answer in units of Pa.
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