Question: Which direction does la Meridiana run?
Answer: precisely N/S

Question: What image is projected on the floor of the heliometer?
Answer: the sun

Question: How many people were living in the Palermo area in 2010?
Answer: 1.2 million

Question: What percentage of Palermo residents were female in 2010?
Answer: 52.6%

Question: What is the average age of a Palermo resident?
Answer: 40.4

Question: Why has Palermo's population declined from 2001 to 2010?
Answer: population flight to the suburbs

Question: On what does Palermo's economy rely?
Answer: tourism and services, but also has commerce, shipbuilding and agriculture

Question: Palermo is the home of what mafia?
Answer: the Sicilian Mafia

Question: Has the level of crime in Palermo risen or declined?
Answer: gone down dramatically

Question: What negative qualities does Palermo carry?
Answer: high unemployment levels, high corruption and a significant black market empire

Question: Which port is Sicily's primary port?
Answer: The port of Palermo

Question: How many passengers travel by Palermo ferry annually?
Answer: 2 million

Question: How many passengers do Palermo's ferries carry each year?
Answer: 2 million

Question: For what is the "tourist marina" dedicated?
Answer: sailing yachts and catamarans

Question: What cities do the ferries of Palermo travel to?
Answer: Cagliari, Genoa, Livorno, Naples, Tunis

Question: Who is the popular patron saint of Palermo?
Answer: Santa Rosalia

Question: When is Palermo's most important religious event of the year held?
Answer: 14 July

Question: Who is said to have ended the Black Death in 1624?
Answer: Santa Rosalia

Question: What is The Festino?
Answer: procession which goes through the main street of Palermo to commemorate the miracle attributed to Santa Rosalia

Question: What is the symbol for Zinc?
Answer: Zn

Question: What is the atomic number for Zinc?
Answer: 30

Question: What is zinc chemically close to?
Answer: magnesium

Question: What is the oxidation state for zinc?
Answer: +2

Question: How many stable isotopes does zinc have?
Answer: five

Question: What is the symbol for zinc?
Answer: Zn

Question: What is zinc's atomic number?
Answer: 30

Question: What other element on the periodic table is zinc similar to?
Answer: magnesium

Question: What is the most common zinc ore?
Answer: sphalerite

Question: What is used to extract zinc during the production process?
Answer: electricity

Question: What two metals are mixed to create Brass?
Answer: copper and zinc

Question: When was brass first used?
Answer: 10th

Question: Where was zinc first produced on a large scale?
Answer: India

Question: When was zinc introduced to Europe?
Answer: end of the 16th century

Question: Where is the oldest evidence of pure zinc?
Answer: Zawar

Question: Brass is an alloy of what two elements?
Answer: copper and zinc

Question: The earliest uses of brass has been attributed to what ancient location?
Answer: Judea

Question: We have evidence of zinc production dating back to the 6th century thanks to what mine?
Answer: Rajasthan

Question: What early process was used to make zinc?
Answer: distillation process

Question: What were the names given to zinc by early alchemists?
Answer: "philosopher's wool" or "white snow"

Question: Who named the element zinc?
Answer: Paracelsus

Question: What was zinc named after?
Answer: Zinke

Question: Who is credited with discovering zinc?
Answer: Andreas Sigismund Marggraf

Question: What two people discovered the electrochemical properties of zinc?
Answer: Luigi Galvani and Alessandro Volta

Question: Where can you find zinc chloride?
Answer: deodorants

Question: Who is credited as giving zinc its name?
Answer: Paracelsus

Question: What does the name zinc or zinke mean?
Answer: (prong, tooth)

Question: Who discovered pure metallic zinc?
Answer: Andreas Sigismund Marggraf

Question: What is the most common use for zinc?
Answer: (hot-dip galvanizing

Question: What is a common use for zinc chloride?
Answer: deodorants

Question: How many people are affected by zinc deficiency?
Answer: two billion

Question: What can consumption of excess zinc cause?
Answer: ataxia, lethargy and copper deficiency

Question: Where can you find enzymes with a zinc atom in the reactive center?
Answer: biochemistry,

Question: What can a lack of zinc cause in children?
Answer: growth retardation, delayed sexual maturation, infection susceptibility, and diarrhea

Question: What is extremely important to prenatal and postnatal development?
Answer: Zinc

Question: What can cause symptoms in children ranging from diarrhea to retarded growth?
Answer: Zinc deficiency

Question: In what substance can you find a zinc atom within its reactive center?
Answer: alcohol dehydrogenase

Question: What causes symptoms such as lethargy and copper deficiency?
Answer: excess zinc

Question: What color is zinc?
Answer: bluish-white

Question: Is iron more dense than zinc?
Answer: It is somewhat less dense than iron

Question: At what temperature does the metal become malleable?
Answer: 100 and 150 °C

Question: At what temperature to zinc become brittle?
Answer: 210 °C

Question: What is the boiling point of zinc?
Answer: 907 °C

Question: In it's pre commercial state, what color is zinc?
Answer: bluish-white

Question: What is the crystalline structure of sync?
Answer: hexagonal

Question: What happens to zinc when it is manipulated to the temperatures between 100 and 150 Celsius?
Answer: becomes malleable

Question: At what temperature can zinc be pulverized?
Answer: 210 °C

Question: How many radioisotopes of zinc have been discovered?
Answer: Several dozen

Question: What is the longest half life of the isotopes?
Answer: 243.66

Question: What does the superscript m represent?
Answer: metastable isotope

Question: How many excited states does 61Zn have? 
Answer: three

Question: How many excited states does 73Zn have?
Answer: two

Question: What is the most long lived radio isotope?
Answer: 65Zn

Question: What is the half life of 72Zn?
Answer: 46.5 hours

Question: How many nuclear isomers does zinc have?
Answer: 10

Question: What does the superscript "m" indicate?
Answer: metastable isotope

Question: What does a metastable isotope do to return to ground state from an excited state?
Answer: emitting a photon in the form of a gamma ray

Question: What oxidation state dominates zinc?
Answer: +2

Question: What indicates the formation of ZN2Cl?
Answer: The volatilization of zinc in combination with zinc chloride at temperatures above 285 °C

Question: what are the only two oxidation states known for zinc?
Answer: +1 or +2

Question: What oxidation state dominates the chemistry of zinc?
Answer: +2

Question: What are the only two oxidation states known for zinc compounds?
Answer: +1 or +2

Question: Because zinc has a filled d-shell, its compounds are usually what?
Answer: diamagnetic and mostly colorless.

Question: The ionic radii of what two elements are almost identical?
Answer: zinc and magnesium

Question: What is the determining factor where zinc and magnesium are very similar chemically?
Answer: ionic radius

Question: Whit what donors does zinc form stable complexes?
Answer: N- and S-

Question: What is necessary to stabilize the low oxidation state of zinc(l) compounds?
Answer: bulky ligands

Question: What core do most zinc(l) compounds contain?
Answer: [Zn2]2+

Question: What confirms the dimeric structure of the compound?
Answer: diamagnetic nature of the ion

Question: When a solution of metallic zinc is cooled in molten ZnCl2, what is formed?
Answer: yellow glass

Question: What is not known for binary compounds of zinc?
Answer: noble gases

Question: ZnO can be dissolved in what kind of solutions?
Answer: strong basic and acidic solutions

Question: What applications do chalcogenides have?
Answer: electronics and optics.

Question: Zn(OH)2 is dissolved to form what in strong alkaline solutions?
Answer: zincates