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The common oxidation number for an alkaline earth metal is +2.Aided by the Born-Mayer equation for lattice energy and aBorn-Haber cycle, illustrate that CaCl is an exothermic compound, Use a suitable analogy to estimate an ionic radius for Ca+. The sublimation enthalpy of Ca(s) is 176 kJ/mol. Demonstrate that an explanation for the nonexistence of CaCl can be found in the enthalpy change of the reaction:2CaCl(s) --> Ca(s) + CaCl2(s)
Tuning proton affinity. The pKa of an acid depends part,y on its environment. Predict the effect of each of the following environmental changes on the pKa of a glutamic acid side change.
certain temperature and pressure, one liter of CO2 gas weighs 1.85 g. What is the mass of one liter of CH4 gas at the same temperature and pressure?
Platinum crystallizes in a face-centered cubic lattice (the Pt atoms are at the lattice points only). If the density of the metal is 22.3 g/cm3, what is the unit cell edge length in pm
Depict two Lewis structures for Cl2O7 one with a Cl--Cl bond and one with a Cl--O--Cl arrangement of atoms. Minimize formal charges on the atoms. Comprise formal charges in the drawings.
A two-component mixture containing 1-octene and 1,4-dimethylbenzene gave only one spot with an Rf value of 0.95. The solvent used was acetone.
which of the following compounds is expected to have the strongest ionic bonds. a) RbF b) NaF c) NaI d) CsBr e) CsI
two thermometers a and b are wrapped in pieces of gauze. the gauze around thermometer a is moistened with water and the
For the following battery: Cd(s) | CdCl2(aq) || Cl-(aq) | Cl2(l) | C(s) Write the reduction half-reaction occuring at the C(s) electrode. (Include physical states of reactants and products.) From which electrode will electrons flow from the batter..
Calculate the value of w (work) for the following system if 20.2 g of NaN3 reacts completely at 1.00 atm and 22 °
what is the hybridization state of the bridgehead carbons in [1.1.1] bicyclopentane (C5H8) and [1.1.1.0] tricyclopentane (C5H6)
how will the temperature of a gas sample change if its volume is decreased assuming everything else is the same and the
Calculate the Molar mass of a gas if 2.20g occupies 0.885L at 690 torr and 36 degrees C
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