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What is the magnitude of the maximum stress that exists at the tipof an internal crack having a radius of curvature of 5.5 ×10-4 mm ( 2.165 × 10-5 in.) and a cracklength of 5 × 10-2 mm ( 1.969 ×10-3 in.) when a tensile stress of 220 MPa ( 31910 psi)is applied?
One of the chair conformations of cis-1,3-dimethylcyclohexane is more stable than the other by 23.1 kJ/mol. Use this to estimate the energy cost of a 1,3-diaxial interaction between two methyl groups.
Calculate the minimum volume of water that is needed to decompose all the excess ethanoic anhydride. Recall: 1.0 g of H2O = 1.0 mL of water, for this purpose
The Delta G for the freezing of H2O(l) at -10 Celsius is -210 J/mol and the heat of fusion of ice at this temperature is 5610J/mol
a sample of hydrogen effuses through a porous container about 9.00 times faster than an unknown gas. estimate the molar
2Al(s)+2KOH(aq)+6H2)-->2KAl(OH)4(aq)+3H2(g) If you place 2.05 g of aluminum in a beaker with 185 ml of 1.35 M KOH, will any aluminum reamin. What mass of KAl(OH)4 will be produced
Calculate the proton motive force across the inner mitochondrial membrane a 25 degrees C when theelectrical difference is -0.18 V (inside negative), pH outside us 6.7, and pH inside is 7.5.
Name and provide the equations for four possible chemical reactions beginning with butane as the substrate (reactant). Use molecular formula and be sure your equations are balanced.
Find out How many grams of gasoline will fill a 12.5gal tank if a particular brand of gasoline has the density of 0.737 g/mL at the temperature of 25 degree Celsius?
How many g of NaCl are required to prepare 250.0 mL of a 0.3440 M solution of NaCl in water?
Calculate the biological standard Gibbs energies of reactions of the following reactions and half-reactions
If the concentration of X is increased to 2.0 M and the concentration of Z to 3.0 M, how long should this reaction take?
The element copper has an atomic weight of 63.5 and consists of two stable isotopes copper-63 and copper-65. The isotope copper-63 has an atomic mass of 62.9 amu and a percent natural abundance of 69.1 %.
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