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A piece of an unknown substance weighing 124.0 is heated in boiling water to 100 degrees Celsius. When the substance is placed in a calorimeter containing 300.o grams of water, the temperature of the water increased from 20 degrees Celsius to 26 degrees Celsius. What is the specific heat of the substance assuming all heat is transferred to the water.
Based on their activation energies and energy changes and assuming that all collision factors are the same, which of the following reactions would be slowest in the reverse direction
According to the Balmer-Rydberg equation, transitions from n= 5 to m= 2 result in a photons of light that give rise to a spectral line with what color
A certain bottled water lists a calcium concentration of 55 mg/L. What is its calcium concentration expressed in parts per million (ppm)
Explain what are some examples of thermodynamic properties that are not state functions. Explain what effect does this have on the calculations that one can do with them
In an experiment synthesized 4-methylcyclohexene + H20 from 4-methylcyclohexanol and an acid catalyst. Utilize anhydrous sodium sulfate to dry my product. Explain how do know when product has been sufficiently dried
write molecular, complete ionic, and net ionic equations for the reactions that occur, if any, when solutions of the following substances are mixed? a. nitric acid and potassium carbonate
Polonium crystals have a simple cubic unit cell. If the edge length of a unit cell is 310. pm, what is the radius a polonium atom
Suppose 8.26 g of solid Mg(OH)2 is added to 36.1 mL of 0.488 M H2SO4 solution. What will the concentration of Mg2+ be when all of the acid has been neutralized. How many grams of Mg(OH)2 will not have dissolved.
If the temperature changes to 89 degrees celsius with no change in volume or amount of gas, what is the new pressure, P2 , of the gas inside the container
Isothermal Pressure Increase Prediction, Estimate the pressure increase needed to decrease isothermally by 1% the volume of
Calculate E degrees, E and delta G for the following cell reactions: (a) Mg(s)+Sn2+(aq) goes to forward and reverse reaction Mg2+(aq) +Sn(s) where [Mg2+]=0.045M and [Sn2+]=0.030M.
Blood has a density of 1060 kg / m3. Circulating all of the blood in the body through the heart takes about one min for a person at rest. (a) Explain how much blood is in the body
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