Synthesis gas (water-gas) is a flammable gas formed when coal, natural gas, or light hydrocarbons react with water vapor in the presence of suitable catalysts. It is a mixture of carbon monoxide (CO) and hydrogen (H2) and may contain significant amounts of nitrogen. Synthesis gas is used as a feedstock for many chemical syntheses (for example, to obtain methanol and ethanol). In addition, synthesis gas is used to obtain syntine (synthetic gasoline). ¹⁾

Pure water has a ph near 7 at room temperature, but this value decreases with increasing temperature. It is also worth noting that water exposed to air becomes slightly acidic due to the absorption of carbon dioxide. ²⁾

The ebullioscopic effect is the increase of the boiling point and the associated decrease of the vapor pressure over the solution (relative to the pure solvent) when salt is added to the solution. Therefore, it is better to add common salt to already boiling water, since the earlier addition of salt raises the boiling point of water. ³⁾

In northeastern India, the village of Mawsynram records the highest annual rainfall in the world. This is because the Himalayas are a climate barrier. They keep warm and moist air from the Indian Ocean. The air trying to cross the mountains rises and thus cools and loses moisture. ⁴⁾

Located in New Zealand, Lake Frying Pan is the largest hot spring in the world. The water there has an average temperature of 140 degrees Fahrenheit. ⁵⁾