氧化矿的成分中Fe和S较低,含SiO2较高,在配料中大量的使用氧化矿能降低入炉料的Fe和S,提高SiO2含量
有反应:Fe 2 O 3 (s)+3H 2 (g) https://assets.asklib.com/psource/201607171548033244.jpg 2Fe(s)+3H 2 O(l),此反应的标准平衡常数表达式应是:()
In “Ticket, Please”, What does Annie’s act on John’s back in a reversal of the traditional position suggest?
John stays at the office until ten o’clock, he’s getting to be a ________.
John Osborne’s achievements lie in ______.
John ’ s record was on the team.
What is John’s reaction when he is taken under control by Annie and the other girls and forced to choose?
What’s John Donne known for?
若增加压力,对反应 Fe 3 O 4(S) +4H 2(g)≒ 3Fe (S) +4H 2 O (g) 的平衡无影响。
观看视频 回答问题My surname is Anderson, that’s A-N-D-E-R-S-O-N, first name John.My family name is Anderson, that’s A-N-D-E-R-S-O-N, first name John.The two sentences are the same meaning.
John Dryden ‘s critical work is _____
在Cr、S、Mn2+、Fe2+四种微粒中,未成对电子数由多到少的顺序是()。 (A) Cr>Mn2+>Fe2+>S (B) Mn2+>Cr>Fe2+>S
在含有Fe<sup>3+</sup>的溶液中加入H<sub>2</sub>S,可生成Fe<sub>2</sub>S<sub>3</sub>沉淀。()
John’s view on the train crash stands those of almost all of his colleagues. ()
计算在800K时反应Fe<sub>3</sub>O<sub>4</sub>(s)+4H<sub>2</sub>(g)—3Fe(s)+4H<sub>2</sub>O(g)的 ,已知:
–I wonder what’s keeping John. He was supposed to be here an hour ago.–_______________.
Fe(s),FeO(s),Fe<sub>3</sub>O<sub>4</sub>(s)与CO(g),CO<sub>2</sub>(g)达到平衡时,其独立化学平衡数R,组分数C和自由度数f分别为( )。
Neither John nor I able to persuade Richard’s grandfather to attend the wedding.
English is my favourite s______ ().
John Stuart Mill’s concept of social liberty means ___________________.
John’s parents are anxious to hear any information()him.
____________ John, she sent him Kate’s new address.
"Garlic shrimp is John’s favorite food. On Tuesdays his wife cooks garlic shrimp." For John, Tuesdays are ________().
Three hours passed, and we were still unable to ____John of his son’s guilt