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【单选题】
所提出的“不困厄,恶能激”,出自于《史记》的哪一篇?A.
《列传》
B.
《淮阴侯列传》
C.
《屈原列传》
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【简答题】solution is preapred by dissovling 35 g of hemoglobin(Hb) in enough water to make up one liter in volume. if the osmotic pressure of the solution is found to be 10 mmg at room temperature, calculate t...
【简答题】What are the assumptions of Beer’s law? 2. (1) Calculate the molar absorptivity of an yte if a 3.4×10 -4 mol/L solution of this chemical is placed in a sample cell with a path length of 5.0 cm and...
【判断题】The Henderson-Hasselbalch equation allows us to (1) calculate pKa, given pH and the molar ratio of proton donor and acceptor; (2) calculate pH, given pKa and the molar ratio of proton donor and accept...
A.
正确
B.
错误
【简答题】Calculate the molar concentration of 98.1 % mass percentage sulfuric acid ( d = 1.84 g·mL -1 ).
【简答题】Calculate the molar solubility of each of the following minerals from its . (1)Alabandite，MnS： (2)Anglesite，PbSO 4 ： (3)Brucite，Mg(OH) 2 ： (4)Fluorite，CaF 2 ：
【单选题】A 5.00g quantity of a diprotic acid is dissolved in water and made up to exactly 250 mL.Calculate the molar mass of the acid if 25.0 mL of this solution required 11.1 mL of 1.00 M KOH for neutralizati...
A.
60.1 g/mol
B.
70.1 g/mol
C.
80.1 g/mol
D.
90.1 g/mol
【简答题】Calculate the molar mass of a compound if 0.372 mole of it has a mass of 152g.
【简答题】A Solution containing 4.74 ug/L KMnO 4 has a transmittance of 0.309 in a 1.00 cm cell at 520 nm. Calculate the molar absorptivity of KMnO 4 .
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【简答题】Calculate the molar concentration of 98.1 % mass percentage sulfuric acid ( d = 1.84 g·mL -1 ).
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