The structures of some common crystalline substances follow. Show that the net composition of each unit cell corresponds to the correct formula of each substance.
Answer to relevant QuestionsThe unit cell for nickel arsenide is shown below. What is the formula of this compound? The compounds Na2O, CdS, and ZrI4 all can be described as cubic closest packed anions with the cations in tetrahedral holes. What fraction of the tetrahedral holes is occupied for each case? Superalloys have been made of nickel and aluminum. The alloy owes its strength to the formation of an ordered phase, called the gamma-prime phase, in which Al atoms are at the corners of a cubic unit cell and Ni atoms are at ...Consider the following vapor pressure versus temperature plot for three different substances A, B, and C. If the three substances are CH4, SiH4, and NH3, match each curve to the correct substance. Use the heating–cooling curve below to answer the following questions. a. What is the freezing point of the liquid? b. What is the boiling point of the liquid? c. Which is greater, the heat of fusion or the heat of ...
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