Question: An alloy of aluminium and gallium in pellet form added to water can be used to generate hydrogen. The process also produces alumina, but the expensive gallium, which prevents the formation of an oxide skin on the pellets, can be re-used. This has important potential implications for a hydrogen economy, as hydrogen can be produced on-site and does not need to be transported.
Try to answer this question if possible: When you combine an alloy of alluminum and gallium to water, what do you get?
Answer: hydrogen
Question: This annexation was one of the direct causes of the brief and bloody War of the Reunions whose outcome left the French in possession. The French annexation was recognized by the Treaty of Ryswick (1697). The official policy of religious intolerance which drove most Protestants from France after the revocation of the Edict of Nantes in 1685 was not applied in Strasbourg and in Alsace, because both had a special status as a province a l'instar de l'etranger effectif (a kind of foreign province of the king of France). Strasbourg Cathedral, however, was taken from the Lutherans to be returned to the Catholics as the French authorities tried to promote Catholicism wherever they could (some other historic churches remained in Protestant hands). Its language also remained overwhelmingly German: the German Lutheran university persisted until the French Revolution. Famous students included Goethe and Herder.
Try to answer this question if possible: When was the French annexation recognized by the Treaty of Ryswick?
Answer: 1697
Question: Similarly, in 1996, member countries of the European Union, per Directive 94/33/EC, agreed to a number of exceptions for young people in its child labour laws. Under these rules, children of various ages may work in cultural, artistic, sporting or advertising activities if authorised by the competent authority. Children above the age of 13 may perform light work for a limited number of hours per week in other economic activities as defined at the discretion of each country. Additionally, the European law exception allows children aged 14 years or over to work as part of a work/training scheme. The EU Directive clarified that these exceptions do not allow child labour where the children may experience harmful exposure to dangerous substances. Nonetheless, many children under the age of 13 do work, even in the most developed countries of the EU. For instance, a recent study showed over a third of Dutch twelve-year-old kids had a job, the most common being babysitting.
Try to answer this question if possible: What age were children allowed to do light labour?
Answer: 13
Question: The city is drained by three rivers; the West, Mill, and Quinnipiac, named in order from west to east. The West River discharges into West Haven Harbor, while the Mill and Quinnipiac rivers discharge into New Haven Harbor. Both harbors are embayments of Long Island Sound. In addition, several smaller streams flow through the city's neighborhoods, including Wintergreen Brook, the Beaver Ponds Outlet, Wilmot Brook, Belden Brook, and Prospect Creek. Not all of these small streams have continuous flow year-round.
Try to answer this question if possible: Into what larger waterway do the West Haven Harbor and New Haven Harbor recess as embayments?
Answer:
Long Island Sound