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A reaction that is first order in A has a rate constant of 0.72/min If the initial concentration of A is 1.60 M, what is the concentration after one minute?
How many total moles of oxygen gas can be generated through this decomposition? B. If this oxygen is formed within the bottle described in question 1, what change in pressure would be predicted?
The heat of vaporization for the compound is 27.49 kJ/mol. Calculate the heat required to convert 26.78 g C2Cl3F3 from -59.34 oC to 83.11 oC
A quality control chemist at Dow Chemical tried to determine purity of NaOH using titration.He measured out 0.500 g NaOH sample, and dissolved it in 20 mL water. 31.2 mL of a 0.386 mol/L HCl solution was used to reach the end point.
An equilibrium mixture contains 0.810 mol HI, 0.170 mol I2, and 0.200 mol H2 in a 1.00-L flask. What is the equilibrium constant for the following reaction
Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×8.50ft.
Calculate how wide is the cloud of organisms at the time peak concentration takes place at the intake pipe.
a solution contains 55 grams of ascorbic acid in 250 g of water freezes at -2.34 degrees C. calculate the molar mass of the solute
This strontium isotope is radioactive, with a half-life of 28.1 yr. Calculate how long it will take for 0.890 g of the isotope to be reduced to 0.250 g by decay.
Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition
Suppose that a fully charged lead-acid battery contains 1.50L of 5.00M H2SO4. What will be the concentration of H2SO4 in the battery after 3.40A of current is drawn from the battery for 4.50 hours?
For the strong base solution 4.0×10?3 M Ca(OH)_2, determine [OH^-], [H_3O^+], pH, and pOH.
Determine the moles of H2O lost. E. Write the empirical formula for hydrated alum, based on your experiment.
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