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3 years ago

A supersaturated solution is unstable and crystallization usually occurs. True False

1 answer:

8 0

The correct answer is true. A supersaturated solution is a solution which contains solute that exceeds the maximum amount the solvent can dissolve. The amount of the solute exceeds the solubility in the solvent. So, this solution is unstable and slight changes would lead to precipitation of some of the solute.

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Need help ASAP!!!!!!!

geniusboy [140]

My Heroes is the time of my time I am in college now that I will do it again tomorrow night and you can do something to me about it and then I will never go back again I hope that I can do this again I don’t want

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3 years ago

What can be added to an atom to cause a nonvalence electron in the atom to temporarily become a valence electron?

vazorg [7]

Answer:

<em>What can be added to an atom to cause a nonvalence electron in the atom to temporarily become a valence electron </em>is<u><em> energy</em></u><em>.</em>

Explanation:

The normal state of the atoms, where all the electrons are occupying the lowest possible energy level, is called ground state.

The <em>valence electrons</em> are the electrons that occupy the outermost shell, this is the electrons in the highest main energy level (principal quantum number) of the atom.

So, a <em>nonvalence electron</em> occupies an orbital with less energy than what a valence electron does; in consequence, in order to a nonvalence electron jump from its lower energy level to the higher energy level of a valence electron, the former has to absorb (gain) energy.

This new state is called excited state and is temporary: the electron promoted to the higher energy level will emit the excess energy, in the form of light (photons), to come back to the lower energy level and so the atom return to the ground state.

6 0

4 years ago

Read 2 more answers

How many grams are in 6.53 moles of Pb

dezoksy [38]

Mr: 207.2
m=n×Mr= 6.53×207.2= 1353.02g

7 0

3 years ago

A saturated solution of barium fluoride, BaF2BaF2, was prepared by dissolving solid BaF2BaF2 in water. The concentration of Ba2+

babunello [35]

Answer: $1.70\times 10^{-6}$

Explanation:

Solubility product is defined as the equilibrium constant in which a solid ionic compound is dissolved to produce its ions in solution. It is represented as

The equation for the ionization of the $BaF_2$ is given as:

$BaF_2\rightarrow Ba^{2+}+2F^-$

When the solubility of $BaF_2$ is S moles/liter, then the solubility of $Ba^{2+}$ will be S moles/liter and solubility of $F^-$ will be 2S moles/liter.

By stoichiometry of the reaction:

1 mole of $BaF_2$ gives 1 mole of $Ba^{2+$ and 2 moles of $F^-$

$K_{sp}=[Ba^{2+}][F^{-}]^2$

$K_{sp}=s\times (2s)^2$

$K_{sp}=4\times (7.52\times 10^{-3})^3$

$K_{sp}=1.70\times 10^{-6}$

Thus $K_{sp}$ for $BaF_2$ is $1.70\times 10^{-6}$

7 0

4 years ago

What organism is responsible for the cycling of nitrogen?

ICE Princess25 [194]

<h3>Answer:<u><em>What organism is responsible for the cycling of nitrogen?</em></u></h3><h3><em><u /></em></h3><h3>Explanation:<u><em>Bacteria</em></u></h3><h3><u><em>Bacteria play a key role in the nitrogen cycle.</em></u></h3><h3><u><em>Some species of nitrogen-fixing bacteria are free-living in soil or water, while others are beneficial symbionts that live inside of plants.</em></u></h3><h3><em><u /></em></h3>

4 0

3 years ago