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At 4062 minutes after a particular experiment had begun, the HI concentration was equal to0.00045 mol/L. The second-order rate constant for the decomposition of HI at700 °C is 1.6*10-3L/mol/s.
Identify the element in the test tube. Is sugar one of the elements? When sugar is burned a black material is left in the test tube along with what appears to be drops of water on the side.
What mass of N2 gas was collected? At 20º C, the vapor pressure of water if 17.5 torr. A sample of N2 gas was collected over water at 20º C at a total pressure of 1.00 atm. A total
When the wire is struck a transverse blow at one end, determine how much time does the pulse take to reach the other end?
What is the vapor pressure at 20C above a solution that has 85.5g of sucrose and 75 g of urea [CO(NH2)2] dissolved per kg of water when the vapor pressure of pure water at 20C is 17.5 torr.
Explain why can methyl orange or phenolphthalein be used for an HCl-NaOH titration, but only phenolphthalein is suitable for acetic acid-NaOH titration?
Initially at 20 C and 1 atm pressure, a sample of benzene is subjected to a pressure of 11 atm at 50 C. assuming α and β to be constant, identify the percentage change in volume of the b
Identify the percentage change in the volume exhibited by an ideal gas initially at the 20 C and 1 atm pressure then subjected to a pressure of 11 atm at 50 C.
The time of efflux of H2O through Ostwald viscometers 1.52 minutes. For the same volume of an organic liquid of density 0.800 g/cc the time is 2.25 minutes.
In a large particle accelerator, deuterons of charge = 1.6 x 10-19 C and mass = 3.36 x 10-27 kg are circulating in circular orbits in the storage ring of radius 8.0 m, having a magnetic field of 0.2 T
Determine the velocity of the falling sphere when a sphere of radius 5 x 10-2cm and density of 0.90 g/cc falls at constant velocity through a liquid 1.00 g/cc and viscosity of 1.00 poise.
Calculate the E0 for the total reaction as well asΔG0 and K at 298K . Consider the reaction: 2H2 + O2 --->2H2OGiven the half reactions:
Determine how much energy should be transferred as heat for the reversible isothermal expansion of the ideal gas at 128°C when the entropy of the gas rises by 35.0 J/K?
Determine the band pass (Δλ) that this grating could produce for green light, λ=500nm in 1st order (m=1) a grating is ruled with 500 lines/mm or d=2.0μm if the slit width is &
Determine what will be the displacement of the mass with respect to the equilibrium position at the given times after its release:
Determine the numbers of grams must be dissolved in the 250 ml of a solution to produce an absorbance of 1.1? The formula weight is 93 g/mol when the molar absorptive of a substance is 3.7 x106.
A proton having mass m = 1.67 x 10-27 kg is being accelerated all along a straight line at 6.2 x 1012 m/s2 in a machine. When the proton consists of an initial speed of 7.9 x 106 m/s and travels 4.4 c
Explain would you expect the activation energy for catalyst reaction to be greater than, less than, equal to that of anuncatalyzed reaction?
If 50.0 ml of a 0.050 M KI is mixed with the 25.0 ml of 25.0 ml of water and a 0.750 MFe+3, explain what will the concentration of each component be after mixing (before any reaction takes place)ass
A transformer comprises of a 500 turn primary coil and a 2000 turn secondary coil. When the current in the secondary is .33A, determine the primary current??
What was this gas and how was it produced when you first added the NaBH4 to the benzoic, gas bubbles most likely evolved from the reaction mixture.
The chemists spread a thin film of certain inert material over the surface of water to cut down the rate of evaporation of water in reservoirs in the water conservation.
In the RLC series circuit, the phase angle among the current and the voltages is 20 degrees. When the AC frequencies twice then determine the resultant phase angle?
What would be the expected final temperature if 5.50 g calcium chloride is dissolved in 50.0 mL of24.7 oC water. The text tells us that ΔHsolution for calcium chloride is -82.8
Determine the average power dissipation in a series RC circuit of R= 5.27 kilo Ohms, X(c) = 1667 ohms, and Z = 5270 ohms, and V = (170V) cos 300?