請問這題為什麼D選項的鋁跟錳離子可溶呢

2+ 12. Consider a solution containing the following cations: Na, Hg²+, Mn²*, Al³+ and Ag. Treatment of the solution with dilute HCl followed by saturation with H₂S results in formation of precipitate(s). Which ions still remain in solution ? Hg Cut Pb Agt TI 7 DE TA. 2A, NH4+ J + + (A.) Ag only; (B.) Na*, Hg²+, Al³+; (C.) Ag* and Hg²+; Na+, Al³+, and Mn²; Nat only

請問這題PH值要怎麼求出來呢 算到這裡就接不下去了 謝謝😭

AIC13 (S) Calculate the pH of a 0.010 M aluminium chloride solution. The Ką value for Al(H₂O)6³* is 1.4 × 10³. (A) pH=1.35 (B) pH=2.38 (D) pH=4.31 (E) pH=5.36 (C) pH=3.43 AlCl3 = Al³+3c1 0.01 AI(H₂0)6+ H₂0A1 (H₂0)3 + H30* x X=0.0037 -3 X = 1.4×10²

請問這題與溶解平衡常數有關的題目要怎麼判斷 為什麼題目給的是Cu(OH)2的Ksp呀😦謝謝

BA [H²] =10³ M (B) 17. We add enough CuCl2 to a pH = 5.0 solution to give [Cu²+]=3.0x10-³ M. If Ksp for Cu(OH)2= 1.6x10-19, determine which of the following is true. (A) the system is at equilibrium (C) a precipitate forms (B) a precipitate does not form (D) none of the above 457.6xio, s= 0.342x166

請問這題這樣算錯在哪呢@@重看了幾遍還是想不出少了什麼

=0.01875 mol Mg02416-40 D (D) 1. If 0.750 grams of magnesium oxide is placed in a coffee-cup calorimeter and then 100.0mL of 1.00 M HCI is added, the temperature of the HCI solution increases from 22.8°C to 28.7°C/Based on this information, calculate the enthalpy change for this reaction per mol of MgO. You may assume that the specific heat of the solution is 4.20 J/g. K and the density of the HCI solution is 1.00 g/mL. (A) -2.54 kJ/mol (B) -29.8 kJ/mol (C)-65.3 kJ/mol (D) -134 kJ/mol

想知道錯的原因～謝謝😊

24. (A) turned to 25. (A) On its own (B) rela (B) Due to (C) Close to 26. to $20 just before Christmas. He wondered if he The Gift of the Magi is one of the most fantastic stories about love and money, published in O. Henry's 1906 short story 27. wanted to get Della collection The Four Million. In the story, Jim found that his income could afford any gift that his wife, Della, had craved for long. With Christmas just a day away, Jim the fine set of combs. Actually, he was not the only person who was planning a surprise gift. His wife, Della, also wanted to get him a gold chain for his beloved watch, which she also could not afford. After purchasing groceries, she had barely any money left. However, deeply in love with one another, they each decided to do whatever it took to get those perfect gifts. Della 28. her money problem. She went out, and a few minutes later showed up in a wig shop, where she quickly found a solution sold her hair. She then used the money made from selling her hair to buy a watch chain and went home to cook Christmas dinner. his eyes upon Della and realized that she had her hair cut. He took out the special gift-the set After Jim came home, he ___29._ of combs. Della was deeply touched and soon her eyes were filled with tears of joy. She then admitted to Jim that she did so just 30. she had sold her hair to buy his gift, he had sold his precious watch to pay for the combs. to buy a watch chain for him. They each had made a huge sacrifice to prove their love for each other. DC 26. (A) is going to be shrunk BC 27. (A) painfully (B) will have been shrunk (B) desperately (B) in <D 28. (A) on CD 29. (A) looked (B) stared D C 30. (A) If (B) Until (C) has been shrunk (C) immediately (C) to (C) fixed (C) Though (D) had been shrunk (D) emotionally (D) for (D) unmoved (D) As

請問這題我這樣計算是正確的嗎？ 我直接拿PV=nRT把溶解度給的毫升代進去算出莫耳數 還是有其他正確解法呢TT謝謝🙏

D& mo The aqueous solubility of O₂ 44.8 mL per liter. What is the molarity of O₂ in a standard water solution when the O₂ is under its normal partial pressure in air in 0.20 atm? 0.2x (44.8x10³) = 18.082x298 =) n = 3x104. (A)1x10 4M (B)2x10-4M 4x10 M 3.6~4. PX=nRX Pin x10 M Poz=0₁2 S= 44,8 ml/ # E5x10-4M 10 9

綠色螢光筆的不是很了解 1. 為什麼會有5呢？ 2. 為何要加52000

dand 2. (LO 3, 4) On January 1, 2020, Hayslett AG had the following equity accounts. Share Capital-Ordinary (€10 par value, 260,000 shares issued and outstanding) Share Premium-Ordinary Retained Earnings During the year, the following transactions occurred. April 1 May 1 June 1 Aug. 1 31 Dec. 1 Declared a €1.50 cash dividend per share to shareholders of record on April 15, payable May 1. Paid the dividend declared in April. Announced a 2-for-1 share split. Prior to the split, the market price per share was €24. Declared a 10% share dividend to shareholders of record on August 15, distributable August 31. On August 1, the market price of the shares was €10 per share. Issued the shares for the share dividend. Declared a €1.50 per share dividend to shareholders of record on December 15, payable January 5, 2021. Determined that net income for the year was €600,000. 31 Instructions Solution 2. a. Apr. 1 May 1 June 1 Aug. 1 31 Dec. 1 31 1 Cash Dividends (260,000 × €1.50) Dividends Payable Dividends Payable Cash No journal entry needed for share split Share Dividends (52,000* × €10) Ordinary Share Dividends Distributable (52,000 × €5) Share Premium-Ordinary (52,000 × €5) *520,000 x.10 Ordinary Share Dividends Distributable Share Capital-Ordinary Cash Dividends (572,000** × €1.50) Dividends Payable **(260,000 × 2) + 52,000 Income Summary €2,600,000 1,500,000 3,200,000 Retained Earnings Retained Earnings Share Dividends Cash Dividends (€390,000+ €858,000) 390,000 390,000 520,000 | 260,000 858,000 600,000 1,768,000 390,000 390,000 260,000 260,000 Prepare dividend ent section. 260,000 858,000 600,000 520,000 1.248,000 14. Luz (a) r equ 15. pre 16- 17 for 18

1. The doctor's prognosis for the patient's condition was __________, giving little hope for recovery. a) pessimistic b) optimist... 繼續閱讀

（算減滴定） 請問這題要怎麼算呢🙏🙏想了很久還是想不到怎麼算🥲

Titration of 0.52 g of pure Na2C2O4 (134.00 g/mol) required 128 mL of KMnO4. What is the molarity of the KMnO4 solution? The chemical reaction is 2MnO4 +5C204 + 16H* → 2Mn²++10CO2 + 8H20 Andr lottle 11 JL. . CHAZ

想要請問標螢光黃的部分 這一句詳解的翻譯是 「年輕遊客將會“獲得更多”，如果將注意力集中在不超過九件物品。」 想問的是這裡的get out of是翻成什麼意思 我想說get out of不是比較負面的意思像擺脫…嗎？ 非常感謝！🙏🏼

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