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Question
Most gases become less soluble in water as the temperature increases. What can be concluded about the signs of 
and 
in this case?
A) 
Hsoln is negative and Ssoln is negative.
B) Hsoln is negative and Ssoln is positive.
C) Hsoln is positive and Ssoln is negative.
D) Hsoln is positive and Ssoln is positive.
Answer
This answer is hidden. It contains 1 characters.
Related questions
Q:
In the following picture of an oxide, darkly-shaded spheres represent oxygen atoms or ions and lightly-shaded spheres represent atoms or ions of a third-row element in its highest oxidation state. Tell whether the oxide is covalent or ionic and whether the oxide is acidic or basic. A) covalent and acidic
B) covalent and basic
C) ionic and acidic
D) ionic and basic
Q:
Picture (a) shows p-orbital overlap between carbon and oxygen atoms; picture (b) shows p-orbital overlap between silicon and oxygen atoms. Based on these pictures, it is expected that
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B) silicon and oxygen form better σ bonds than carbon and oxygen, so Si-O single bonds are stronger than C-O single bonds.
C) carbon and oxygen form better π bonds than silicon and oxygen, so C=O double bonds are stronger than Si=O double bonds.
D) silicon and oxygen form better π bonds than carbon and oxygen, so Si=O double bonds are stronger than C=O double bonds.
Q:
Which element shown on the periodic table above forms an interstitial binary hydride with the formula MXx?
A) element A
B) element B
C) element C
D) element D
Q:
Which element shown on the periodic table above forms a covalent binary hydride with the formula MX4?
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B) element B
C) element C
D) element D
Q:
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The following pictures represent binary hydrides, AHx, where A = Na, Ti, C, or Cl. Lightly-shaded spheres represent H atoms or ions and darkly-colored spheres represent atoms or ions of element A.Which hydride has the lowest melting point?A) hydride (1)B) hydride (2)C) hydride (3)D) hydride (4)
Q:
When 3.600 grams of anhydrous magnesium chloride were exposed to moist air, water was absorbed by the sample. If the resulting hydrated compound has a mass of 4.962 grams, what is the chemical formula of the hydrate?
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C) MgCl2 3H2O
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Q:
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C) CoCl2 6 H2O
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Q:
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Q:
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A) H2O
B) H2O2
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Q:
What is the reaction of potassium peroxide in water?A) 2 KO2(s) + H2O(l) -> O2(g) + 2 K+(aq) + HO2-(aq) + OH-(aq)B) K2O2(s) + H2O(l) -> 2 K+(aq) + HO2-(aq) + OH-(aq)C) 2 K2O2(s) + 2 H2O(l) -> 4 K+(aq) + 4 OH-(aq) + O2(g)D) K2O(s) + H2O(l) -> 2 K+(aq) + 2 OH-(aq)
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Q:
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Which element most readily forms nonstoichiometric hydrides?
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Which transition metal hydride is commonly used in the purification of hydrogen gas?
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Covalent hydrides of the type MH3 are likely to form with elements of what group?
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Q:
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Q:
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Q:
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Q:
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Q:
Chromium can be electroplated from an aqueous solution containing sulfuric acid and chromic acid, H2CrO4. What current is required to deposit chromium at a rate of 1.25 g/min?
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Q:
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Q:
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Q:
A steel pipe can be protected from corrosion by attaching the pipe to a piece of magnesium because
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D) magnesium and steel form a corrosion resistant alloy.
Q:
Which of the following statements concerning the rusting of iron is false?
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B) The metal is reduced.
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Q:
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