8 Soluble salts can be made using a base and an acid.(a)Complete this method of preparing dry crystals of the soluble salt cobalt(II) chloride-6-water from the insoluble base cobalt(II) carbonate.Step 1Add an excess of cobalt(II) carbonate to hot dilute hydrochloric acid.Step 2Step 3*...
根据“The baking soda is a base, while the vinegar is an acid. When the two combine(结合), they create CO2.”小苏打是一种碱,而醋是一种酸。当两者结合时,就会产生二氧化碳。可知,小苏打和醋的反应会释放出二氧化碳,故选C。【小题2】细节理解题。根据“Before you begin, make sure that you ...
Is C_5H_5N an acid or a base? What is the definition of an acid and a base? How do you determine whether NH3 is an acid or a base? The conjugate acid of H2O is: (a) H3O+ (b) OH- (c) H2O (d) H+ (e) H2O is not a base or acid. If a pH is closer to 13, is ...
Br+H3O -- HBr+H2O, when this reaction is reversed (a) what substance acts as an acid? (b) what substance acts as a base? Based on what you have learned about the acid/base properties of Al3+ in an aqueous solution, what side product might be produced in this...
H2O(l) + HC l(g) --> H3O+ (aq) + Cl-(aq) If this is the case, then what is the reaction between this d :-Xiluted acid and magnesium?? is a H+ involved?? what happens to this hydroxonium ion?? 352+7O3+or even H9O4+......
A.O2B.O3C.CO2D.H2OWhat should you do before you begin?A. Heat the water.B. Drink some juice.C. Blow up the balloon.D. Pul the balloon long.What does the underlined word "inflare" mean in Chinese?A.涨价B.膨胀C.吹捧D.抬高What can be used instead of vinegar?A. Milk.B. Water....
故选C 37.细据"Before you begin. be sure you pull the balloon long to make it as easy as possible to blow up."可知,在开始之前,你应该先把气球拉长。 故选C 38.细节理解题 根据"The baking soda is a base, while the vinegar is an acid (酸). When the two mix together. they create ...
Twitter Google Share on Facebook chalcanthite Thesaurus Encyclopedia Wikipedia (kælˈkænθaɪt) n (Minerals) a blue secondary mineral consisting of hydrated copper sulphate in triclinic crystalline form. Formula: CuSO4.5H2O [C19: via German from Latinchalcanthumcopper sulphate solution, ...
An acid-curing coating agent which can be diluted with water contains as binder, a polyester resin directly sol, in H2O whose alcoholic component forms a polyethylene glycol with a mol wt of 200-1500, and a condensatn product of HCHO with amino compds., etherified with lower aliphatic ...
acid (only in the presence of a catalyst under pressure and at high temperature): 2P 6H2O = 2HPO35H2. Water does not react with nitrogen and hydrogen, but with carbon at high temperatures it gives water vapor: C + H2O = CO + H2. The reaction can be used both in the industrial ...