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A ground state H atom absorbs a photon of wavelength 91.72 nm. Explain what higher energy level did the electron reach?
the ratio of the no of molecules in the excited state at the temperature of 213 K to the number of ground state molecules and the percent of the excited molecules at 213 K.?
How many gram of each of the following substances will dissolve in 100 mL of cold water. Ce(IO3)4 RaSO4 Pb(NO3)2 (NH4)2SeO4
A reaction mixture initially containing 0.520 M H2S and 0.520 M SO2 was found to contain 1.0 x 10 -3. A second reaction mixture at the same temperature initially contains 0.245 and 0.335. calculate the equilibrium concentration of H2O in the secon..
Nitrogen and oxygen do not react appreciably at room temperature, as illustrated by our atmosphere. But at high temperatures, the reaction below can proceed to a measurable extent.
A chemist wants to prepare a solution with a freezing point of 22.0°C and has 100.00 g of glycerol on hand. What mass of water should the chemist mix with the glycerol?
Write balanced, net ionic equations when the following compounds are mixed. Indicated mixtures where no reaction is expected with the notation no rxn.
a. set up the hamiltonian operator for the system of an electron interacting with a fixed nucleus of atomic number z
must be dissolved in 15.0g of camphor to lower its freezing point by 2 degrees celsius? constant k of camphor = 37.7 (*C x kg)/mol
Part A How many shifts must you work if you wish to wash 10 loads of laundry? Part B How many loads of laundry will each shift pay for if the cost per load rises to 8 quarters
question the compound is packaged as a 10 solution density 1.0 gmol in water. if your dentist injects 0.50 ml of the
When 0.60 grams of a molecular covalent compound is dissolved in 10 grams of water, the freezing point of the soludion is -1.86 C. Given that the freezing point of pure water is 0 C and that the freezing point depression constant for water is 1.85..
In a calorimeter, 100 g of ice melts at 0oC. The enthalpy of fusion of the ice is 334 J/g. How much heat was absorbed.
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