0.5m氢氧化钠怎么配制
如何配制100克5%的氢氧化钠水溶液,今天我们来用科学实验的方法,来看一下怎么配置溶解。<br>质量分容数计算公式,质量分数等于溶质质量与溶液质量的百分比。 即ω(B)=m(B)/m,其中ω(B)表示溶质B的质量分数,m(B)表示溶液中溶质B的质量,m表示溶液的质量。<br>氢氧化钠性质。氢氧化钠,化学式为NaOH,俗称烧碱、火碱、苛性钠,为一种具有强腐蚀性的强碱,一般为片状或块状形态,易溶于水(溶于水时放热)并形成碱性溶液,另有潮解性,易吸取空气中的水蒸气(潮解)和二氧化碳(变质),可加入盐酸检验是否变质。
"以下是一篇关于介绍深圳旅游景点的英语作文,可以介绍欢乐谷 锦绣中华,民俗文化村,世界之窗啊等等: Shenzhen is one of China's top tourist destinations, attracting millions of visitors each year. Its pleasant seashore and well-preserved forests have made<br>-----------------------------------------------------------------------------------------------------<br>Shenzhen is one of China's top tourist destinations, attracting millions of visitors each year. Its pleasant seashore and well-preserved forests have made up for its lack of stately mountains and rivers, and earned it the title of ""International Garden City.""<br>Another magnet comes from its theme parks, with a great variety of features ranging from folk culture to a retired aircraft carrier. Distinctive sceneries, fabulous shows and stunning experiences: the parks' charms never seem to fade.<br>And don't forget this is a modern metropolitan, where high-rise buildings and green space intermingle perfectly. It is a financial center, a transportation hub, and home to many first-rate hotels and restaurants. Here you will never fail to find a cuisine that arouses your appetite and curiosity,<br>For tourists, this is a city of convenience, leisure and endless fun.<br>Theme Parks in the Overseas Chinese Town A magnet for tour groups, the Overseas Chinese Town (Hua Qiao Cheng) in Nanshan District features four distinctive theme parks sitting side by side. A monorail commutes around the parks in the area<br>Chinese Folk Culture Villages<br>Right next to Splendid China, the folk culture park dazzles with the histories and mysteries of the country's ethnic groups. Scattering around the 180,000-sqm park are 24 villages built in 1:1 ratio, inhabited by real ethnic people who present their traditional arts, customs, languages and cuisines. Traditional culture performances are held there every day. Like Splendid China, the park is also heavily forested.<br>Happy Valley<br>This is a place for kids and families. Usually packed on weekends by families, the fun park offers more than 100 attractions ranging from the thrilling Space Shot to the lovely cartoon-themed<br>events. It also holds daily performances of various themes.<br>Window of the World<br>Like Splendid China, this 480,000-sqm park features more than 130 miniature replicas of scenic and cultural wonders. The difference is that these are landmarks from all over the world. Here you can find the Golden Gate Bridge and the Niagara Waterfall of the United States, the Kremlin of Russia, Italy's Pisa Tower, Egyptian pyramids, the Taj Mahal of India and an Eiffel Tower built in 1:3 ratio.<br>Although these replicas would probably not attract Western visitors much, the park's daily dance performance and regular carnival-like events are of great fun. Beautifully illuminated at night, it is also an impressive city scene."