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Utilizing Hess's Law to compute standard enthalpy change for decomposition of MgCl(s) to MgCl2(s) as well as Magnesium metal in Kj/mole Hf of MgCl2=-125kj and Hf of MgCl2(s)=-642 kj
not all element names come from english or latin words. the sysmbol for tungsten is w from the german word wolfram. the
you have 75.0 ml of a 2.50 m solution of na2cro4aq. you also have 125 ml of a 1.79 m solution of agno3aq. calculate the
A hydrated compound contains 1 mole of cation M, 3 mole of anion A, and 2 moles of water. The correct formula is
Tetraphosphorousdecaoxide reacts with water to produce phosphoric acid. P4O10 + H2O H3PO4. Balance the equation.
Chromatographic column, it is important to let the level drop in the column eluent to the level of the sand before applying the solution of the compound to be separated. What effect would have on the efficiency of separation ignore this recommenda..
Determine which of the following reactions are oxidation-reduction reactions and which are not. what type of reaction do you have if it is not an oxidation-reduction reaction?
Calculate ?H° for each of the following reactions using the data in Appendix 4: 4Na(s)+O2(g) ? 2Na2O(s) 2Na(s)+H20(l) ? 2NaOH(aq)+H2(g) 2Na(s)+CO2(g) ? Na2O(s)+CO(g) Explain why a water or carbon dioxide fire extinguisher may not be effective inpu..
Ethanol (C2H5OH) is produced from the fermentation of sucrose in the presence of enzymes. C12H22O11(aq) + H2O(g) > 4 C2H5OH(l) + 4 CO2(g)
Which, if any, of the fractions obtained from each of the two distillations conducted in this experiment had boiling point ranges that suggested that these fractions were primarily one component
What is the melting point of a 20% by weight aqueous solution of a sugar whose molecular weight is 180 g/mol. The Kb for water is 0.51 (degrees Celsius*kg)/mol.
The element Uranium found on earth is most likely formed by which nucleosynthetic process
For chemical reactions involving ideal gases, the equilibrium constant K can be expressed either in terms of the concentrations of the gases (in M) or as a function of the partial pressures of the gases
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