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A 15.25 gram sample of copper primarily at 92 degrees is added to a container containing water. The final temperature of the metal is 26.21oC. Explain what is the total amount of energy in Joules added to the water? Explain what was the energy lost by the metal?
Sulfur-38 has an atomic mass of 38.0 and a half-life of 2.87 h. How long does it take for 99.99% of a sample of sulfur-38 to decay
A fossil was analyzed and determined to have a carbon-14 level that is 42.0 that of living organisms. How old is the fossil
Write the mass balance equation and charge balance equation for a solution that is 0.1 M FeCl3 and 0.2 M FeCl2
According to the valence bond theory, which of the following molecules involves sp2 hybridization of orbitals on the central atom?
in spreading liquid ammonia fertilizer the charges for the amount of ammonia used are based on the time involved plus
calculate the heat released when 2.58 l of cl2g with a density of 1.88 gl reacts with an excess of sodium metal at
Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.
Compute the weight percent of Cl in the original sample. Ferrous ammonium sulfate heahydrate 392.13 g/mol, ferrous chloride hexahydrate 234.84 g/mol, and cupferron (155.16 g/mol).
After equilibrium is established, the flask is found to contain 1.13 x 10-3 mol of Cl2. Calculate the value of the equilibrium constant, Kc, for the reaction at this temperature.
Suppose that a fully charged lead-acid battery contains 1.50 of 5.00 . What will be the concentration of in the battery after 3.90 of current is drawn from the battery for 5.50
How many gms of H2O must be combined to 519.5 gms of methanol at 20°C to have an osmotic pressure of 408 mm of Hg? Methanol density = 0.8921 g/mL.
Which of the subsequent pairs of compounds would be most easily separated by thin layer chromatography: n-octyl alcohol and1-octene, hexadecane and octadecane or chlorobenzene and bromobenzene
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