Chlorine has been used to disinfect water for consumption in the US since the early 1900's, leading to the virtual elimination of waterborne diseases and improved public health. It is extremely effective at killing pathogens and diseases, is inexpensive, easy to control and monitor, as well as ...
A. The tests on adding chlorine to the water。 B. The measures the city officials took. C. The bans the city officials made. D. Mayor Collins’ opinion on solving the pollution problem. 相关知识点: 试题来源: 解析 B 解析:主旨大意题。第四段谈道:为了解决问题,市政官员向水中加碳和氯。接...
结果1 题目 12 What are the products, other than water, when chlorine is passed through cold, dilute aqueous sodium hydroxide solution? A□ A NaCl and NaCIO B NaClO and NaCIO3 C NaCl and NaClO3 D NaClO and NaCIO4 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
Since the water is not for drinking, larger quantities may be used and the smell may be quite noticeable. Chlorine is also used in the following ways: In pharmaceuticals, including important antibiotics and anti-malarial drugs; To make insecticides, such as dichlorodiphenyltrichloroethane (DDT)...
Unchlorinated substances, on the other hand, have not been exposed to or mixed with chlorine in any form. 7 In many municipal water systems, water is chlorinated to kill harmful bacteria and make it safe for drinking. Unchlorinated water might not have gone through this disinfection process ...
marble and the shells of snails and sea creatures -- along with sodium chloride and hydrogen ions. The hydrogen ions turn the solution acidic, and they combine with leftover sodium bicarbonate to produce carbon dioxide gas, water and sodium ions. They also combine with chlorine to make hydrogen...
months,thereislesschlorine (氯)inthewater andbacteria (细菌)starttogrow.You?dbetter notdrinkthewaterotherwiseyoumaygetsick. 10 Schwabsaidpeopleshouldbecareful withthem.Ifyouleaveabottleofwaterunderthe sunorinacarforalongperiodoftime,theplasticproducesachemicalcalledBPA.Thischemical cancauseheartdiseaseandca...
Each element melts, solidifies, and turns into gas at different temperatures.Answer and Explanation: Become a Study.com member to unlock this answer! Create your account View this answer The melting point of chlorine (Cl) is -100.98 °C. This is the temperature at which solid chlorine ...
Chlorine is a greenish-yellow gas, named after the word chloro which means greenish yellow in Greek. It has an atomic weight of 35.45 and a melting...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your ...
Why does chlorine have a higher electronegativity value than krypton? What H+ ions of an acid and the OH- ions of a base means. What is the difference in macroscopic properties between covalent and ionic bonds? What are the products of the reaction between the two compounds NaOH(aq) and ...