Chapter 16: Q114 AE (page 704)
When wet laundry is hung on a clothesline on a cold winter day, it freezes but eventually dries. Explain.
The process of evaporation takes place in this case, and evaporation causes cooling.
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Consider a perfectly insulated and sealed container. Determine the minimum volume of a container such that a gallon of water at will evaporate completely. If the container is a cube, determine the dimensions in feet. Assume the density of water is.
A mineral crystallizes in a cubic closest packed array of oxygen ions with aluminum ions in some of the octahedral holes and magnesium ions in some of the tetrahedral holes. Deduce the formula of this mineral, and predict the fraction of octahedral holes and tetrahedral holes that are filled by the various cations.
Pyrolusite is a mineral containing manganese ions and oxide ions. Its structure can best be described as a body centered cubic array of manganese ions with two oxide ions inside the unit cell and two oxide ions each on two faces of the cubic unit cell. What is the charge on the manganese ions in pyrolusite?
The table below lists the ionic radii for the cations and anions in three different ionic compounds.
Formula | ||
71 pm | 140. pm | |
AIP | 50.0 pm | 212 pm. |
BaO | 135 pm | 140. pm |
Each compound has either the , or ZnS type cubic structure. Predict the type of structure formed ( , or ) and the type and fraction of holes filled by the cations, and estimate the density of each compound.
Argon has a cubic closest packed structure as a solid. Assuming that argon has a radius of 190 pm. Calculate the density of solid argon.
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