Chemistry

Interhalogen compounds ________. A) are exceedingly reactive B) contain halogens in both ...

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The number with the most significant zeros is ________. A) 0.08 B) 0.00090 C) 90.300 D) ...

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A sample of iron absorbs 81.0 J of heat, upon which the temperature of the sample increases from ...

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At elevated temperatures, methylisonitrile (CH3NC) isomerizes to acetonitrile (CH3CN): CH3NC (g) ...

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Oxides of most nonmetals combine with base to form ________. A) hydrogen gas B) an acid C) a ...

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Volatility and vapor pressure are ________. A) inversely proportional to one another B) directly ...

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A compound decomposes by a first-order process. If 13 of the compound decomposes in 60 minutes, the ...

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The temperature of a 35.1 g sample of iron increases from 24.5 C to 31.8 C. If the specific heat of ...

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The molecular geometry of the SiH2Cl2 molecule is ________. A) trigonal planar B) tetrahedral ...

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The width, length, and height of a large, custom-made shipping crate are 1.12 m, 1.25 m, and 0.83 m, ...

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Which equation correctly represents the reaction between silica and hydrofluoric acid? A) SiCl4 + ...

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Which one of the following is always positive when a spontaneous process occurs? A) Ssystem B) ...

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Some things take longer to cook at high altitudes than at low altitudes because ________. A) ...

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A class of molecules that works at very low concentrations in mediating hormonal activity has been ...

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The formula weight of Zn(ClO4 )2 is ________ amu. A) 164.7 B) 128.0 C) 79.0 D) 264.1 E) ...

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An alkali metal forms a compound with chlorine with the formula ________. (The symbol M represents ...

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Round the following number to four significant figures and express the result in standard ...

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Cholesterol is an example of A) a steroid with very specific hormonal activity. B) a steroid ...

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The solubility of lead (II) chloride (PbCl2 ) is 1.6 10-2 M. What is the Ksp of PbCl2? A) 5.0 ...

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What is the coefficient of M when the following equation is completed and balanced if M is an alkali ...

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The formula weight of LiClO4 is ________ amu. A) 212.3 B) 101.0 C) 52.0 D) 106.3 E) ...

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The second law of thermodynamics states that ________. A) E = q + w B) Hrxn = nHf (products) - ...

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The molecular geometry of the CHCl3 molecule is ________. A) bent B) trigonal planar C) ...

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On a phase diagram, the critical pressure is ________. A) the pressure required to melt a solid ...

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The female sex hormones that control the development of female characteristics are called A) ...

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