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2 years ago

12

For which element are the number of protons, electron, and neutrons are 36, 36, and 48 respectively? a cadmium b rubidium c brom

ine d krypton

2 answers:

Anna71 [15]2 years ago

5 0

Krypton has 36 protons and electrons and 48 neutrons.

Goshia [24]2 years ago

5 0

Its D.krypton.

hope this helps you

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Thermal energy when solid, liquor , and gas combine

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Which of the following statements best describes why a chemical change is different from a physical change.

Butoxors [25]

Answer:

C) Chemical changes involve formation of a new substance while physical change only impacts appearance or form.

Explanation:

The obvious difference between a chemical change and physical change is that in a chemical change new substances are produced while in a physical change, the form of the compounds are altered.

Most phase changes are products of physical changes. Such changes are easily reversible.
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The element krypton (symbol: Kr) has several radioactive isotopes. Here

Dovator [93]

Answer:

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Explanation:

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2 years ago

Given the value of the equilibrium constant (Kc) for the equation (a), calculate the equilibrium constant for equation (b)

matrenka [14]

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Explanation:

The given chemical equation follows:

$O_2(g)\rightarrow \frac{2}{3}O_3(g)+\frac{1}{2}O_2(g)$

The equilibrium constant for the above equation is $5.77\times 10^{-9}$

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$3O_2(g)\rightarrow 2O_3(g)$

The equilibrium constant for this reaction will be the cube of the initial reaction.

If the equation is multiplied by a factor of '3', the equilibrium constant of the new reaction will be the cube of the equilibrium constant of initial reaction.

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2 years ago

Predict if a solid precipitate will form when solutions of KOH(aq) and Fe(NO3)3(aq) are mixed. If so, identify the solid.

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Answer:

The answer to your question is KNO₃ is soluble and Fe(OH)₃ is insoluble.

Explanation:

Data

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Iron nitrate Fe(NO₃)₃

Double displacement reaction

3KOH + Fe(NO₃)₃ ⇒ 3KNO₃ + Fe(OH)₃

Conclusion

KNO₃ is soluble because compounds containing alkali metals ions are

soluble and also compounds containing nitrate ion are soluble.

Fe(OH)₃ is insoluble because compounds containing OH are insoluble

except Ba(OH)₂

7 0

3 years ago