Problem: The Srijana Contemporary Art Gallery, located inside the Bhrikutimandap Exhibition grounds, hosts the work of contemporary painters and sculptors, and regularly organizes exhibitions. It also runs morning and evening classes in the schools of art. Also of note is the Moti Azima Gallery, located in a three storied building in Bhimsenthan which contains an impressive collection of traditional utensils and handmade dolls and items typical of a medieval Newar house, giving an important insight into Nepali history. The J Art Gallery is also located in Kathmandu, near the Royal Palace in Durbarmarg, Kathmandu and displays the artwork of eminent, established Nepali painters. The Nepal Art Council Gallery, located in the Babar Mahal, on the way to Tribhuvan International Airport contains artwork of both national and international artists and extensive halls regularly used for art exhibitions.
The Moti Azima Gallery contains objects that might be found in a Nepalese house of what time period?
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Answer: medieval

Problem: East Prussia enclosed the bulk of the ancestral lands of the Baltic Old Prussians. During the 13th century, the native Prussians were conquered by the crusading Teutonic Knights. The indigenous Balts who survived the conquest were gradually converted to Christianity. Because of Germanization and colonisation over the following centuries, Germans became the dominant ethnic group, while Poles and Lithuanians formed minorities. From the 13th century, East Prussia was part of the monastic state of the Teutonic Knights. After the Second Peace of Thorn in 1466 it became a fief of the Kingdom of Poland. In 1525, with the Prussian Homage, the province became the Duchy of Prussia. The Old Prussian language had become extinct by the 17th or early 18th century.
What language did the Teutonic Knights speak?
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Answer: unanswerable

Problem: The X-ray crystal density method is primarily a method for determining the Avogadro constant NA but as the Avogadro constant is related to the Planck constant it also determines a value for h. The principle behind the method is to determine NA as the ratio between the volume of the unit cell of a crystal, measured by X-ray crystallography, and the molar volume of the substance. Crystals of silicon are used, as they are available in high quality and purity by the technology developed for the semiconductor industry. The unit cell volume is calculated from the spacing between two crystal planes referred to as d220. The molar volume Vm(Si) requires a knowledge of the density of the crystal and the atomic weight of the silicon used. The Planck constant is given by
Calculating molar volume requires knowledge of what two factors?
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Answer:
the density of the crystal and the atomic weight of the silicon used