Find the wavelengths appear in the system emission spectrum
The allowed energies of the quantum system are 1.0 eV, 2.0 eV, 4.0 eV and 7.0 eV. Find out the wavelengths appear in the system's emission spectrum?
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Elemental Boron is a mixture of two isotopes, Boron- 11 and Boron- 10, of atomic mass 11.009 amu and 1-.013 amu respectively. The atomic mass of Boron recorded in the Periodic Table is 10.81 amu.
A hair dryer draws 1200W, a curling iron draws 800 W and the electric light fixture draws 500 W. When all three of these appliances are operating in parallel on a 120 V circuit, determine the net current drawn?
Given that So=201.0 J/mol K for RO2 (g) and So=138.4J/mo lK for RO3 (g) at25oC. Determine the standard change in entropy (J/K) at25oC for the reaction below?
A population is normally distributed with the standard deviation sigma = 349. We wish to test the hypotheses Ho: ? = 66,818; H1 = ? > 66,818. A 123-item sample has a mean = 66,399.2. Determine the value of the test statistic?
At 25oC the substance X is an element which has the elemental form of X(s). At 25oC the standard enthalpy of formation of HXO4 (g) is -970.8 kJ/mol.
Determine the equilibrium constant, K, value (ignore units) at the 460.0K for the following reaction? N2(g)+3H2(g)→ 2NH3(g) What is the equilibrium constant, K, value at 460.0K for the following reaction? N2(g) + 3H2(g) 2NH3(g)
The position of the third-order maximum is around 6.70 cm from the center of the central maximum. i) Determine the wavelength of the light.
Discuss the meaning of the following percentiles: The 5th percentile of weight for three-year-old females is 11.66 kg and the 25th percentile of weight for three-year-old males is 13.38 kg.
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