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【单选题】
一定量理想气体经历的循环过程用 V - T 曲线表示如图。在此循环过程中,气体从外界吸热的过程是A.
→ B
B.
→ C
C.
→ A
D.
A → B和 C → A
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【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 ：
【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 ).