Problem: Please answer a question about the following article about Zinc:
Zinc chemistry is similar to the chemistry of the late first-row transition metals nickel and copper, though it has a filled d-shell, so its compounds are diamagnetic and mostly colorless. The ionic radii of zinc and magnesium happen to be nearly identical. Because of this some of their salts have the same crystal structure and in circumstances where ionic radius is a determining factor zinc and magnesium chemistries have much in common. Otherwise there is little similarity. Zinc tends to form bonds with a greater degree of covalency and it forms much more stable complexes with N- and S- donors. Complexes of zinc are mostly 4- or 6- coordinate although 5-coordinate complexes are known.
Because zinc has a filled d-shell, its compounds are usually what?
A: diamagnetic and mostly colorless.
Problem: Please answer a question about the following article about The Blitz:
On 13 March, the upper Clyde port of Clydebank near Glasgow was bombed. All but seven of its 12,000 houses were damaged. Many more ports were attacked. Plymouth was attacked five times before the end of the month while Belfast, Hull, and Cardiff were hit. Cardiff was bombed on three nights, Portsmouth centre was devastated by five raids. The rate of civilian housing lost was averaging 40,000 people per week dehoused in September 1940. In March 1941, two raids on Plymouth and London dehoused 148,000 people. Still, while heavily damaged, British ports continued to support war industry and supplies from North America continued to pass through them while the Royal Navy continued to operate in Plymouth, Southampton, and Portsmouth. Plymouth in particular, because of its vulnerable position on the south coast and close proximity to German air bases, was subjected to the heaviest attacks. On 10/11 March, 240 bombers dropped 193 tons of high explosives and 46,000 incendiaries. Many houses and commercial centres were heavily damaged, the electrical supply was knocked out, and five oil tanks and two magazines exploded. Nine days later, two waves of 125 and 170 bombers dropped heavy bombs, including 160 tons of high explosive and 32,000 incendiaries. Much of the city centre was destroyed. Damage was inflicted on the port installations, but many bombs fell on the city itself. On 17 April 346 tons of explosives and 46,000 incendiaries were dropped from 250 bombers led by KG 26. The damage was considerable, and the Germans also used aerial mines. Over 2,000 AAA shells were fired, destroying two Ju 88s. By the end of the air campaign over Britain, only eight percent of the German effort against British ports was made using mines.
What did the Germans use along with incendiaries and bombs?
A: aerial mines
Problem: Please answer a question about the following article about Geography of the United States:
The Great Basin and Columbia Plateau (the Intermontane Plateaus) are arid or semiarid regions that lie in the rain shadow of the Cascades and Sierra Nevada. Precipitation averages less than 15 inches (38 cm). The Southwest is a hot desert, with temperatures exceeding 100 F (37.8 C) for several weeks at a time in summer. The Southwest and the Great Basin are also affected by the monsoon from the Gulf of California from July to September, which brings localized but often severe thunderstorms to the region.
During which months are portions of the US affected by the monsoon from the Gulf of California?
A: July to September
Problem: Please answer a question about the following article about Chihuahua (state):
The end of the Porfiriato came in 1910 with the beginning of the Mexican Revolution. Diaz had stated that Mexico was ready for democracy and he would step down to allow other candidates to compete for the presidency, but Diaz decided to run again in 1910 for the last time against Francisco I. Madero. During the campaign Diaz incarcerated Madero on election day in 1910. Diaz was announced the winner of the election by a landslide, triggering the revolution. Madero supporter Toribio Ortega took up arms with a group of followers at Cuchillo Parado, Chihuahua on November 10, 1910.
Who stated that Mexico was ready for a Democracy and that he would step down?
A:
Diaz