27 Calcium reacts with water to form calcium hydroxide and hydrogen.Ca(S)+2H_2O(l)→Ca(OH)_2(S)+H_2(g) The standard enthalpy change for this reaction can be determined experimentally.What further information are needed to calculate the standard enthalpy change of formation of calcium hydro...
When calcium oxide reacts with water, the temperature of the mixture ___. A. decrea
33 Calcium reacts with water to form calcium hydroxide and hydrogen.Ca(S)+2H_2O(l)→Ca(OH)_2(s)+H_2(g) The standard enthalpy change for this reaction is -414kJ mol-1.What further information is needed in order to calculate the standard enthalpy change of formation of calcium hydroxid...
Calcium (反应) with water but less violently than sodium and potassium do.相关知识点: 试题来源: 解析 【答案】reacts 【解析】本题考查动词解题步骤:1. 确定词性。根据空格发现本题缺少谓语,判定本空填写动词。2. 确定答案。翻译的动词形式,确定单词为react,且本题句子描述了一客观真理,根据三单,空格应填...
Calcium is an important determinant of water harness, and it also functions as a pH stabilizer, because of its buffering qualities. Calcium also gives water a better taste. In what way and in what form does calcium react with water?
Calcium is an alkaline earth metal and water is a compound. They react when combined. Answer and Explanation:1 Calcium hydroxide and hydrogen gas are generated when calcium reacts with water. This is a single displacement reaction. The equation is: ...
Calciumreacts with water. 钙和水会发生化学反应。 柯林斯例句 Vitamin D is necessary to aid the absorption ofcalciumfrom food. 从食物中吸取钙需靠维生素D的帮助。 《牛津高阶英汉双解词典》 We needcalciumto make bones. 我们需要钙来壮骨.
Question: Calcium hydride, CaH2, reacts with water to form hydrogen gas.CaH2(s) + 2 H2O(l) Ca(OH)2(aq) + 2 H2(g)This reaction is sometimes used to inflate life rafts, weather balloons, and the like, where a simple,...
Calcium is a silver-white metal, somewhat malleable and ductile; stable in dry air, but in moist air or with water reacts to form calcium hydroxide and hydrogen gas; when heated burns in air to form calcium oxide emitting a brilliant light. Discovered by Davy in 1808. There are six stabl...
aFly in the presence of water will react with calcium hydroxide (a product of cement water reaction) at ordinary temperatures to produce cementitious compounds. Because of its spherical shape and pozzolanic properties, fly ash is useful in cement and concrete applications. 飞行在水面前将起反应与氢...