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107年 - 2018臺南市市立復興國中八年級107 上學期英文第三次段考(期末考)翰林#86884
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A(2), B(3), C(0), D(0), E(0) #2347775
詳解 (共 1 筆)
ACE
B1 · 2021/07/27
#4947391
.Today is January ...
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#2347776
1.If the equilibrium constant for A+B⇌C is 0.123, then the equilibrium constant for 2C⇌2A+2B is . (A) 1.00-2(0.123) (B) 8.13 (C) 0.123 (D) 66.1 (E) 16.3
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2. Consider the following rate law: Rate = k [A]n[B]m. How are the exponents n and m determined? (A) By using the balanced chemical equation (B) By using the subscripts for the chemical formulas (C) By using the coefficients of the chemical formulas (D) By educated guess (E) By experiment
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3. How many oxygen atoms are there in one formula unit of Ca3(PO4)2? (A)2(B)4 (C)6 (D)8 (E) none of these
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4. An unknown substance dissolves readily in water but not in benzene (a nonpolar solvent). Molecules of what type are present in the substance? (A) neither polar nor nonpolar (B) polar (C) either polar or nonpolar (D) nonpolar (E) none of these
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5. Which of the species below, when dissolved in H2O, will not produce a basic solution? (A) SO2 (B) NH3 (C) BaO (D) Ba(OH)2 (E) none of these
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