問題詳情
33. 0.255 M 硝酸 35.0 mL 加入 0.328M 硝酸鎂溶液 45.0 mL 中,則最終硝酸根的濃度為何?
(A) 0.481 M
(B) 0.296 M
(C) 0.854M
(D) 1.10 M
(A) 0.481 M
(B) 0.296 M
(C) 0.854M
(D) 1.10 M
參考答案
無參考答案
內容推薦
- 已知 H3PO4 其解離常數 Ka1 = 3 ✖ 10–3,Ka2 = 2✖ 10–6及 Ka3 = 8 ✖10–13。則 NaH2PO4 水溶液呈現 (A)中性(B)鹼性 (C)
- 下列何者有最高的熔點 (A) NaI (B) NaF (C) MgO (D) MgCl2
- 2SO3(g) 2SO2(g) + O2(g)為吸熱反應,若溫度上升時 (A)會產生更多的 SO3 (B)平衡常數 Kc將上升 (C)平衡常數 Kc不改變 (D)系統壓力將下降
- 下列敘述何者錯誤? (A)催化劑增加正向反應速率,但不改變逆向反應速率 (B)催化劑改變化學反應機構(mechanism of reaction) (C)催化劑改變活化能 (D)催化劑可增加反
- (i) SO3(ii) SO32– (iii) NO3– (iv) PF3 (v) BF3 左列何者結構為平面形狀? (A) (i)及(ii) (B) (i)、(iii)及(v) (C) (i
- 下列何者有最大的電負度(electronegativity) (A) Mg (B) Ga (C) Si (D) Ba
- 某一級反應A → B 完成25%反應需時42分鐘 (25°C),則此反應半生期 (half-life) 為多少? (A) 21 min (B) 42min (C) 84 min (D) 101
- 重量百分比為 50%的丙酮水溶液,其密度為 0.9849 g/mL (20°C),則此溶液體積莫耳濃度為 (A) 0.621 M (B)61 M (C) 66 M (D) 71
- 下列何組分子具有相同的幾何形狀 (A) SF4 and CH4 (B) CO2 and H2O (C) CO2 and BeH2 (D) N2O andNO2
- 化合物 IF5 中心原子所具有的孤電子對數目及此化合物幾何形狀分別為 (A) 0,square pyramidal (B) 0,trigonalbipyramidal (C) 1,octahe
內容推薦
- 15關於歇後語的說明,何者是正確的? (A)司馬昭之心-路人皆知 (B)草船借箭-不自量力 (C)劉備得孔明-收買人心 (D)劉備借荊州-粗心大意。
- 16海倫.凱勒說:「我們最可怕的敵人不在懷才不遇,而在我們的躊躇、猶豫。認定自己是這種人,於是便只能成為那樣的人。」依據上文,海倫.凱勒認為下列何者才是可怕的缺失? (A)師心自用 (B)獨斷獨行(C
- “_____” has been adapted to events coming to an end, such as “Mexit” for footballer Lionel Messi&
- It is amazing that the online retail giant Amazon.com. _____ loads of packages during this holida
- 下列何者「引申義」說明錯誤? (A)跋涉:旅途艱辛 (B)圭臬:束縛 (C)權衡:評估得失 (D)砥礪:磨鍊
- 下列詩句若按照春夏秋冬的季節順序,何者排列正確? (甲)十里平湖綠滿天,點點菡萏惜華年(乙)燕山雪花大如席,片片吹落軒轅臺 (丙)暮雲收盡溢清寒,銀漢無聲轉玉盤 (丁) 顛狂柳絮隨風舞,輕薄桃花逐
- 下列詞語和文意的配對,何者「不恰當」? (A)企圖駕馭別人之前,先能駕馭自己/嚴以律己 (B)真實力量的溫和蘊藉/勇於表現 (C)對未來善加籌畫,但是永不忘記過去/鑑往知來 (D)不要引導他走上安
- 20「在畫架前,畢卡索一站就是幾個小時,他幾乎從來不改變姿勢。他作畫時通常不允許別人在場,然而凡是得到許可看過畢卡索作畫的人, 。沙巴泰說『他作畫時思想如此集中,如此沉靜,以至
- As for those vinyl records, 13 million LPs were sold in 2014, the highest _____ in 25 years, acc
- 下列「 」中的字,哪一個解釋正確? (A)可愛者甚「蕃」:繁雜 (B)抑揚頓「挫」:挫敗 (C)復於地取「內」口中:放入 (D)「乍」暖還寒:忽然。
- Uniqlo, Japan's biggest _____,is aimed at producing the low-cost clothing in classic designs
- It may be difficult to establish a clear _____ relationship between a cultural phenomenon and a
- 22英國推理小說家柯南‧道爾:「我從來不猜測,這是一種極壞的習慣,足以破壞邏輯的推理」這段話說明推理時的態度應如何? (A)大膽假設 (B)有幾分證據說幾分話 (C)打開天窗說亮話 (D)細心觀察。
- My typist has not returned my paper yet, but she promised _____ by tomorrow.(A) for me to have i
- _____ in an atmosphere of rigid discipline, Mary can hardly open herself on social occasions(A)
- Color, line, mass, space, and texture are to a painter _____ to an author.(A) are what words(B)
- The legacy of Steve Jobs is a life story _____ a lot of people have strong feelings.(A) of(B) by
- 23「唯每年籬東菊綻,積興成癖,喜摘插瓶,不愛盆玩。非盆玩不足觀,以家無園圃,不能自植。貨於市者,俱叢雜無致,故不取耳。其插花朵,數宜單,不宜雙,每瓶取一種不取二色,瓶口取闊大不取窄小,闊大者舒展不拘
- I'm going to take a business trip, but I can't leave my cat alone at home. While I am
- Over the centuries, various theories have been advanced _____.(A) the origin of alphabetic writi
- Chemical engineers have found many ways of treating paper to make it strong, fireproof,_____ to
- 24「在縮尺一比四千萬的世界地圖上/我們的島是一粒不完整的黃□□/鬆落在藍色的制服上。」(陳黎島嶼邊緣)上文的缺空,應填入何者? (A)玉米 (B)稻穀 (C)鈕扣 (D)藥丸。
- Steve doesn't work hard when he was young. Now, he regrets _____ his youth away.(A) idle(B)
- I told Henry to bring an umbrella, but he didn't listen to me. He'll get _____ in the
- It is prohibited by law to mail through parcel post any merchandise that might prove in _____ tr