6. The densities of mercury (oymbol Hg) and gold (oymbol Au) are given in the fo

Question

6. The densities of mercury (oymbol Hg) and gold (oymbol Au) are given in the following table. Substance Mercurv Gold Density.g/mL 13.55 a) What is the density of Hg in kg/L? A10 ml graduated cylinder is filled to 5.00 ml. A suspect "gold" ring is placed in the graduated cylinder and the water level rises to 5.15 ml. The ring is weighed on an analytical balance as 2.8315 g. Find the density of the ring. b) c) Is the ring in part b pure gold? Explain your answer A single layer of gold atoms form a surface whose dimensions are 1000 angstromsx 1000 angstroms. [1 angstrom = 10an] 7. a) What is the area of this surface in square angstroms? b) What is the surface area in em22 The units ofthe chain system ofmeasure used by surveyors are: 7.92 inches = 1 link 10 chains = 1 friong 8· 100 links = 1 chain 80 chains = 1 mile The distance of the Kentucky Derby is 1.25 miles. How many furiongs is the Kentucky Derby? 9. The dispiacement of the engine in a Ford Mustang is 5.0L. Convert this to cubic inches

Explanation / Answer

Problem 7)

A) Surface area, S = 1000 x 1000 = 1000000 Angstrom square.

B) Surface area, S = 1000 x 10-8 x 1000 x 10-8 = 1000000 x 10-16 cm2

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