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How many electrons can be removed from element 79 before it is reduced to its core electron configuration? For the purposes of this question, the core electron configuration is the configuration of the next lightest rare gas atom.
Calculate the wavelength in picometer of gamma ray radiation whose frequency is 9.74 × 1019 Hz. Express answer in scientific notation.
ow many grams and how many moles of octane must be burned to release 450 kcal?
a volume of 60.0 ml of aqueous potassium hydroxide koh was titrated against a standard solution of sulfuric acid
the three species n2 co and cn- are isoelectronic. comment on the location of any formal charges in these moleculesion
Give the structure that corresponds to the following molecular formula and 1H NMR spectrum: C7H12Cl2: ? 1.07 (integral = 6203, s); ? 2.28 (integral = 1402, d, J = 6 Hz); ? 5.77 (integral = 700, t, J = 6 Hz). Note: The integrals are given in arbitr..
the partial pressure of helium is 341 mmhg and the partial pressure of neon is 112 mmhg, what mass of argon is present in the mixture?
Calculate the enthalpy change in kJ when 21.6g of H2S is burned. 2H2S(g) + 3O2(g) --> 2SO2(g) + 2H20(g) Change in H=-1036kJ/mol
Ethanol (molar mass = 46 g/mol) can be dehydrated to yield ethene (molar mass = 28 g/mol) by heating it with an excess of concentrated sulfuric acid (acting as a catalyst).
The reaction 2A ---> B + C has a Kc of 0.2. The reaction is commenced with initial concentrations [A] = 0.2 M, [B] = 0.2 M and [C] = 0.2 M. In what direction does the reaction occur?
Consider the reaction CaCN2 + 3H2O ->CaCO3 + 2NH3 . How much NH3 is produced if 187 g of CaCO3 are produced?
Describe the chemistry involved in the current indstrial preparation of adipic acid, specifically listing the major by-product
Calculate the freezing point of a solution that contains 8.5g of benzoic acid (C6H5COOH, MW=122) in 75g of benzene, C6H6.
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