At what concentration of S(expressed as a multiple of KM) will νo=0.95Vmax?
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At what concentration of S(expressed as a multiple of KM) will νo=0.95Vmax?
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- What is the HVL of tissue for 1.25 MeV gamma-rays. How many half-layers of tissue are in the human forearm (assume an average thickness of 10 cm of tissue). What is the reduction in intensity as a 1.25 MeV gamma-ray passes through 10 cm of tissue? Assume the density of tissue is 1 g/cm2.The temperature dependence of the vapor pressure is given by the equation: ΔΗ RT Inp = In A – Where: p= vapor pressure T = temperature A = pre-exponential constant AHvap = enthalpy of vaporization In order to solve for the enthalpy of vaporization, AHvap, you must: Step One Add the same expression to each side of the equation to leave the term that includes the variable by itself on the right-hand side of the expression: (Be sure that the answer field changes from light yellow to dark yellow before releasing your answer) ΔΗ RT + Inp = + In A Drag and drop your selection from the following list to complete the answer: 1 1 In In A - In A KCalculate the absolute uncertainty for the following: (1.15 ±0.24 ng)/(2.20 ±0.35 L)
- A drug has a measured diffusivity of 5*10^-6 cm^2/s^-1 at 37 degree Celsius. What is this drug’s Stokes-Einstein radius in nm?If experimental determinations of Kp at different temperatures for a given equilibrium in the temperature range 20-40 °C are fitted to the function shown below: In K, = a T2+c In() (a = 123.5 K?; = 23.6) %3D Answer the following questions: Calculate Kw at 5°C, assuming that AH° is temperature independent.Solution A is 20 degrees celsius, Solution B is 80 degrees celsius (both are the same kind of solution). The goal is to make a 50 degree celsius solution; How much of solution A do you need (starting with 100g of solution B)? (cp=4.184 J/g C)
- Graphically derive the value of KM from a Michaelis-Menten PlotThe following reaction plays a key role in the destruction of ozone in the atmosphere: Cl(g)+ O3 (g)-> ClO(g)+O2 (g) Given the standard molar entropies (S°) below, calculate the ΔS for this reaction. S°C1O = 218.9 J/mol*K S°O3 = 238.8 J/mol*K S°Cl = 165.2 J/mol*K S°O2= 205.0 J/mol*K _______ J/K = ΔSCalculate the change in molar entropy of the system associated with transforming a supercooled water at -10 degree Celsius into ice at the same temperature. The molar heat capacity at constant pressure of liquid water and ice are 75.3 and 36.8 J/K.mol, respectively. Also, the molar heat of fusion and vaporization are 75.3 and 36.8 J/K.mol, respectively.
- Calculate the heat energy released when 25.7 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for mercury at 1 atm heat capaċity of Hg(1) 28.0 J/(mol-K) kJ melting point 234.32 K enthalpy of fusion 2.29 kJ/mol ||In 2011, researchers showed that hypochlorous acid (HClO) generated by white blood cells kills bacteria. Calculate the percent dissociation of (a) 0.40 M HClO; (b) 0.035 M HClO (Ka = 2.9x10-8).Calculate the Keq (report up to two decimal places and do not use scientific notation) for the net reaction at 298.15K. (see attached image) Note: R = 1.98 x 10 -3 kcal/mol-K