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A solution is prepared by mixing the 90 ml of 5.00M HCL and 30 ml of 8.00M HNO3. Determine the added until the final volume is 1.00L. Determine H+ and OH- and the pH for this solution.
Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by in cineration. Even an empty can contains residual gaseous propellant.
Suppose you are investigating a murder, the coroner determines the body temperature of cadaver and finds it to be 34°C.
Assuming all the steam is converted to water; explain what would be the final temperature of the system, the heat transferred from the water to copper, and the entropy change of the water, copper, a
Determine the total pressure of a mixture of 0.0335 mol of helium, He, and 0.0240 mol of oxygen, O2, in a 4-L flask at20°C.
Given the average rate of the reaction is found to be 4.50 × 10-4 M/s, explain how long will it take the concentration to drop to 0.340 M? In the reaction A → products, the initial c
Calculate the maximum height, neglecting all the forms of friction, to which a car of mass 1000kg can be driven on the 1 gallon fuel given that the engine cylinder temperature is 2000 Celsius and th
On a day when the atmospheric pressure was29.85 in Hg, he trapped some air in the tip of a J-tube and calculated the difference in the height of the mercury in the two arms of the tube (h).
If 33.5 mL of the acid solution are needed to neutralize the 25.0 mL of the base solution, the concentration of the NaOH in moles/liter is? A standard solution of 0.154 M HCl is used to explain the
At 25 degrees Celsius if 205g of water absorbs the 295 kilojoules of heat from a mountain climber's stove at an elevation where the boiling point of water is 91 degrees Celsius.
Under the identical conditions, this pinhole will allow the 0.017 moles of argon gas to effuse every hour. Explain how long should you let the oxygen escape from the pinhole in order to reduce the p
The molar enthalpy change of vaporizing ethanol is 38.6 kJ/mol at the boiling point (78.4 °C); likewise, at-33.34 °C it takes 23.35 kJ/mol for ammonia to boil.
Describe the sub shell corresponding to the following sets of quantum numbers? An example of a sub shell is 2s.
The concentration of hydrogen peroxide in a solution is determined by titrating a 10.0 mL sample of the solution with permanganate ion under the acidic conditions, forming the manganese (II) ion and
A mixture of butane and ammonium nitrate are placed into a steel cylinder and detonated. The product gases (CO2,H2O, N2) reach a temperature of 725oC. Determine the average kinetic energy per molecule
Determine the numbers of grams of each of the following substances will dissolve in 100 ml of cold water? Consult your hand book. Ce(IO3)4, RaSO4, PB(NO3)2, (NH4)2SeO4.
Explain how rapidly would the following particle be moving if it had the same wavelength as a photon of green light (λ = 500.0nm)? where an electron of mass 9.10939 x 10-28 g
The mass of Li2O produced when the 2.00 g of lithium reacts with the 2.00 g of oxygen is 3.02 g. Determine the percent yield? Where atomic weights: Li = 6.94, O = 16.00. 4Li + O2 --> 2Li2O
Theoretically determine the numbers of moles of water should be formed if 0.3818 moles of C3H8 and 1.718 moles of O2 are allowed to react, and this is the only reaction which occurs.
Explain how IR, NMR, and the Mass Spec can be used to differentiate among the starting material and the product. Discuss which peaks would indicate the presence of the starting material, and which
At1100K a 1.00 L vessel initially contains 0.777 moles of SO3. Determine the Kc for the following reaction, if 0.520 moles of SO3remain at equilibrium?
If it required 27.92 mL of NaOH to reach the equivalence point, explain what was the concentration of the acetic acid solution? 20.00 mL of an acetic acid, CH3COOH solution of unknown concentration
A vat contains 2.93 M sulfuric acid solution. Determine the number of kg of KOH will be need to react totally with neutralize 864 L of the solution?
How much more acidic is water with pH 8.1 compared to water atp H 8.2? Discuss why a change in pH of the ocean water is likely to affect the many biochemical reactions taking place in the ocean wat
Determine the mass of iron would be needed to cover a football playing surface of 120 y ds x 60. Yds to a depth of 1.0 mm when the iron has a density of 7.87 g/cm3.