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Calculate the percent yield for the reaction PCl3(g) +Cl2(g) PCl5(g) if 119.3g of PCl5 are produced when 61.3g of Cl2 react with excess
The electron moves via a uniform magnetic field given by = Bx + (2.79 Bx). At a particular moment, the electron consists of velocity of 1.29+4.79 m/s and the magnetic force acting on it is (5.17 X 1
Discuss why the multiple extractions with smaller volumes of the extraction solvent are usually better than the single extractions with a larger volume of the extraction solvent?
For the equation C2H5OH (l) + 3O2 (g) --> 2CO2 (g) + 3H2O (g), ΔUrφ = -1373 kJ at 298 K. Discuss how much heat is released per mole of ethanol combusted?
i) Determine how fast and in what direction are the cars moving following the collision? ii) Determine how much kinetic energy is lost in the collision?
What volume of the 50X stock is required if a garose gel buffer (TAE) is prepared as a50X stock to prepare 5 liters of buffer at the working concentration (1X).
Consider an electron freely moving in a two-dimensional square box of length 2.50 nm. Calculate the zero-point energy of the particle.
The percentage of an additive in the gasoline was calculated six times with the following results: 0.13, 0.12, 0.16, 0.17, 0.20, 0.11%. Identify the 90% and 99% confidence intervals for the percent
Determine the pH of a solution made by adding the 1.55g of sodium hydride, NaH, to enough the water to make 0.1540 L of solution.
Assume that a certain biologically important reaction is quite slow at the physiological temperature in the absence of a catalyst. How much must an enzyme lower the activation energy of the
Determine the equation of the line passing through the point (-1,2) and making the angle of 13o with the x-axis. Determine equation of the line making the angle of 8o with y-axis and passing through p
Calculate the volume of a certain bacterial cell in cubic millimeters?Calculate the volume of exactly 1 X 10^5 cells in liters?
How high would the column of water be if a barometer were built using water instead of the Hg, when the pressure were 1 atm, knowing that the density of water is 13.6 times lower than that
When the K1 for its conjugate acid is having 1.2 x 10^-8. Calculate the Kb for the reaction written in a? Calculate the pH of a .0020 M solution of Codeine?
Assume you are pedaling front sprocket at rate of 1.5 rev and your forward speed is sec 11 mph on bike. Determine radius of front sprocket?
The mass to use in the expression for the vibrational frequency of a diatomic molecule is the effective mass μ= (mamb)(ma+mb) The following data on the infrared absorption of wave numbers(in
A 10.0m3 tank contains steam at 15.0 bars and 275°C. The tank and its contents are cooled until the pressure drops to 1.2bar. Explain
When the Moist hydrogen containing 4 mole percent water is burnt entirely in a furnace with 32% excess air, determine the Orsat analysis of the resulting flue gas.
Calculate the theoretical yield for this reaction under the given conditions? Calculate the percent yield for this reaction under the given conditions?
When a qualitative method often used to measure whether an organic compound contains the oxygen is to test its solubility in the concentrated sulphuric acid which donates a proton to oxygen very ea
The sum of the oxidation states is zero in a neutral compound. Note that the sign of the oxidation states and the number of atoms associated with each oxidation state must be con
How far has Lee traveled once he returns to his starting position? How much time will elapse during Lee's circuit?
A sample which is having 0.5033g of an unknown salt was dissolved in the water and passed through a caution exchange resin. The total elute from the Colum was diluted to 250ml and a 50ml aliquot was
When the water is exposed to infrared radiation of the wavelength 2.6×10-4 cm. Assume that all the radiation is converted and absorbed to heat, determine the numbers of photons wi
Determine the ratio of the more stable chair conformation to the less stable conformation at equilibrium at 298 K for the following compounds: bromocyclohexane and methylcyclohexane.