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Anna11 [10]
3 years ago
13

When water evaporates at constant pressure, the sign of the change in enthalpy

Chemistry
1 answer:
Marat540 [252]3 years ago
8 0
B. is positive
H20 (l)--> H20 (g)
when that happens, the heat is absorbed into the liquid to change the state of the liquid to gas; therefore, in order to change to a gaseous state, heat must be a reactant. and so enthalpy is increasing
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stiks02 [169]
<span>
Mn²⁺ + 4H2O -----> MnO4⁻ + 8H⁺ +5e⁻                  /*2
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4 0
3 years ago
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Which pair will for an ionic compound
vovikov84 [41]

Answer: A pair of elements will most likely form an ionic bond if one is a metal and one is a nonmetal. These types of ionic compounds are composed of monatomic cations and anions.

Explanation:

A pair of elements will most likely form an ionic bond if one is a metal and one is a nonmetal. These types of ionic compounds are composed of monatomic cations and anions.

Explanation:

The chart below shows monatomic ions formed when an atom loses or gains one or more electrons, and the ionic compounds they form. You can check your periodic table to see that the cations are monatomic ions formed from metals, and the anions are monatomic ions formed from nonmetals.

3 0
2 years ago
A student has two unopened 33 CL cans containing carbonated water. Can A has been stored in the garage 32 degrees and can B has
IgorC [24]

Answer:

A. Can A will make a louder and stronger fizz than can B.  

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The solubility of a gas in a liquid decreases as the temperature increases, so the warmer can will have more undissolved carbon dioxide.

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2 years ago
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