gaseous ammonia is generally referred to as anhydrous ammonia to distinguish it from household ammonia, which is an ammonium hydroxide aqueous solution. gaseous hydrogen chloride is generally referred to as anhydrous to distinguish it from the more commonly used 37% w/w solution in water.
20th century. The total solar eclipse of June 8, 1918 crossed the United States from Washington State to Florida. This path is roughly similar to the August 21, 2017 total solar eclipse and was the last time totality crossed the nation from the Pacific to the Atlantic.
This total solar eclipse is fully visible in Charleston. This is a rare and spectacular event that can only be experienced along a relatively narrow strip on the Earth's surface. The eclipse is also visible in other areas, but the Moon does not cover the Sun completely there. More about the August 21, 2017 â Total Solar Eclipse.