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A 70 kg man jumps 1m down onto a concrete walkway. His downward motion stops in 0.0200 seconds. If he forgets to bend his knees, what force is transmitted to his leg bones?
Calculate the value of E°cell for a voltaic cell described in each of the following. Enter your answer with 3 significant digits. Enter scientific notation as 1.23E4. (a) Br2(l) is reduced to Br
Calculate deltaS, deltaStotal, and deltaSsurroundings when the volume of 84.0g of CO initially at 298K and 1.00bar increases by a factor of four in (a) an adiabatic reversible expansion, (b) an expansion againt Pexternal=0, and (c) an isothermal r..
At a particular temperature and pressure, 25.0 g of CO2 occupy 7.16 liters. What is the volume of 14.0 g of CH4 at the same temperature and pressure?
95.0mL of rm H_2O is initially at room temperature (22.0rm{} ^{circ}C). A chilled steel rod at 2.0rm ^{circ}C is placed in the water. If the final temperature of the system is 21.4^{circ}C.
A reaction has a standard free energy change of -11.50 kj/mol^-1. Calculate the equilibrium at 25 degrees celcius
A buffer contains 0.40M base, B, and 0.25M of its conjugate acid, BH+, and has a pH = 8.88. What is the pH after 0.0020mol of HCl is added to 0.25L of this solution?
hydrogen has two naturally occurring isotopes normal hydrogen h with atomic mass of 1 and deuterium d with atomic mass
The standard free-energy difference between the two chair conformations of isopropylcyclohexane is 9.2 kJ mol-1 (2.2 kcal mol-1). What is the ratio of concentrations of the two conformations (axial and equatorial) at 25 °C
Find the Fourier transform of the function exp(-πx2/ σ2). Explain how the width and height of the bands are inversely related in the two domains. Why should this be so
An aqueous solution of hydrobromic acid is standardized by titration with a 0.164 M solution of potassium hydroxide. If 39.7 mL of base are required to neutralize 18.1 mL of the acid, what is the molarity of the hydrobromic acid solution
The atomic mass of silver is 107.868 amu. There are two naturally occurring isotopes of silver, Ag-107 (106.904 amu) and Ag-109 (108.905 amu). What percentage of naturally occurring silver is the heavier isotope. A. 42.5% B. 45.4% C. 48.2% D. 49.8..
How many milliliters of a 0.20 M glucose C6H12O6 solution are needed to provide a total of 25.0 g of glucose?
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