[Soda ash knowledge] Daily question (4) 2009.09.26

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Warmly celebrate the establishment of the section, and launch a prize-winning quiz activity (updated once a day). Everyone is welcome to actively participate and provide valuable opinions and constructive suggestions. The maximum score for this activity is 40 wealth, and friendship and repeated scoring are prohibited. Each small question costs 2 coins (fill in the blanks, choices, and judgments), and each big question costs 20 coins (questions and answers, calculations). All members already have permission to use hidden replies. Please cooperate actively. Starting from this issue, in principle, no rating will be given if you do not hide it. Thank you all! Specific hiding methods: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 If you answer questions from the same IP address, only the first answer is valid. Edited posts are not graded. (All questions are extracted from the "Technical Worker Job Training Question Bank - Soda Ash Production Operator". The electronic version of the book is available for download in the soda ash information sharing area. http://bbs.hcbbs.com/thread-13140-1-2.html ) 1. Ammonium chloride molecular formula ( ), relative molecular mass ( ). 2. Ammonium chloride ( ) is soluble in water, and the aqueous solution is ( ). 3. The main production methods of caustic soda are ( ) and ( ). 4. The semi-finished products produced by the ammonia-alkali method and the combined alkali method are ( ), and the main components are ( ). 5. Calcium chloride has products such as ( ), ( ) and ( ). 6. The molecular formula of calcium chloride is ( ), and the relative molecular mass is ( )