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- Construct a Born-Haber cycle and calculate the lattice energy of CaC2 ( s ). Note that this solid contains the diatomic ion C 2 2- Useful Information : H f
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- a) On the basis of electronegativity, will the molecule ICl (iodine chloride) will be polar or not? If it should be polar, which end is positive and which end
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- For each of the following polyatomic ions, What is the Lewis structure, including resonance if appropriate and what are the non-zero formal charges? a) BH 4 -
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- Let's use the concept of surface tension as surface energy per unit area to see if we can estimate, at least to the correct order of magnitude, the surface
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- A spider spins a fine thread of spider silk between two posts a distance L 0apart. The thread has a diameter of d = 5 10-6 m and an equilibrium length of L 0.
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- a) In terms of F, A, Y, L0, and L, what is the formula for stress? In terms of the same variables, what is the formula for strain? b) Two rods, which have
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- Kangaroos are very efficient at hopping; they can hop for miles without fatigue. Their legs have very long tendons that act like springs: they stretch and
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- Consider three sequences (an); (bn); (sn) such that an > sn > bn for all n and lim an = lim bn = 0. Prove, directly from the denition of limit, that lim
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