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An electron in a hydrogen atom drops from the nnnRH
Write = 6 state to the = 4 state. What is the energy (in J) of an electron in the = 6 of the Bohr H atom? = 2.18 × 10-18 J (answer as a decimal number or in scientific notation in the following format: -1.23e-45)
Do bonds break during the evaporation of the molecular substances hexane and 1-pentanol
Explain why the Rf values changed when the eluant was changed from 100% petroleum ether to a 95:5 mixture of petroleum ether-ethyl acetate. Why UV light is not a useful visualization technique in every circumstances?
what is the standad potential for I 2 being reduced to I- given that the standard reduction potential for Cr2O7 2- changing to Cr3+ is +1.33V I got to
Question- If the enthalpies of formation of carbon dioxide and water are -393.509 kJ/mol and -285.83 kJ/mol respectively, what is the enthalpy of formation of C10H8(s) in kJ/mol
1. From a human resources viewpoint explain who are the main stakeholders in this incident.
Write the standard line notation for each cell below. Assume all concentrations are 1.0 M and all partial pressures are 1.0 atm. IO3-(aq) + Fe2+(aq) --> Fe3+(aq) + I2(aq)
What is the percent yeild of alum if 0.4000g of aluminum is used in the synthesis of alum and 4.8946 grams if alum is actually collected at the end of the exper
Question- Determine if HNO3 can dissolve each of the following metal samples. If so write the balance chemical reaction showing how the metal dissolves and determine the minimum volume of 6M HNO3 needed to completely dissolve the samples.
what mass of oxygen gas measured at 238 k and 3.51 atm is required in order to release 6670 kj of heat to the
A molecule of unknown structure has a molecular formula of C9H8O2. In the infrared spectrum there are absorptions at 1761, 1145, and 761 cm-1. In the 13C NMR spectrum there are absorptions at. 168.4, 152.0, 128.2, 128.0, 124.3, 122.8, 116.8, 29.1 ..
The specific heat capacities of Fe(s) and water are 0.45 J/g? and 4.184 J/g?, respectively. What is the final temperature of the system?
When 25 mL of a 90 mL stock solution containing 2.15 M Pb(ClO3)2 is diluted to 33 mL, what is the concentration of ClO3- in the new solution
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