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What are the errors in the energy transformation using electrically heated calorimeter experiment (energy transfer between electrical and heat energy)?
For 300.0 mL of a buffer solution that is 0.325M in CH3CH2NH2 and 0.300 in CH3CH2NH3CL, calculate the initial and the final after adding 0.005 mol of NaOH.
A solution is prepared by dissolving 20.0 g of K2HPO4 and 25.0 g of KH2PO4 in enough water to produce 1.0 L of solution. What is the pH of this buffer
using a solution that is containing 110-2 m pb2 ions is mixednbsp to 210 -4m solution of i-ions now you just need to
Given the reaction 4Al(s)+302(g)--2Al2O3(S), what is the minimum number of moles of oxygen gas required to produce 1.00 mol of aluminum oxide?
A sample of air contains 78.08% nitrogen, 20.94% oxygen, 0.05% carbon dioxide, and 0.930% argon by volume. How many molecules of each gas are present in 1.00 L of the sample at 31 degrees C and 1.00 atm?
Zn is immersed in a solution of CuCl2. What is the reaction and at what activity ratio of Zn(2+) / Cu (2+) will the reaction stop
A 9.0×10-2 M solution of a monoprotic acid has a percent dissociation of 0.60%. Determine the acid ionization constant Ka for the acid.
A 1.27 g sample of a gaseous oxide of nitrogen occupies a volume of 1.07 L at 25°C and 737 mmHg. What is the most likely formula for the gas. A. NO2 B. N2O C. NO D. N2O4
Use Dalton's law and the vapor pressure of water at 22C to compute the partial pressure of hydrogen gas in the collecting tube.
imagine that you have been hired as an efficiency consultant by a plant that produces ammonia using the haber
calamine lotion contains a mixture of both zinc and iron oxides. a 1.022 g sample of dried calamine was dissolved in
If the container is compressed to 2.40 \rm L and the temperature is increased to 36\, \rm ^{\circ}C, what is the new pressure, P_2, inside the container
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