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3 years ago

In a solution, the substance that changes phase is the _, while the substance that does not change phase is the.

1 answer:

8 0

2) A) <span>solute, solvent

3) B) </span><span>Stirring mixes solute particles with solvent particles more thoroughly, providing more chances of interaction.

4) D) </span><span>concentrated and unsaturated

Hope this helps!</span>

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Balancing oxidation-reduction reactions <br> Mg+ N2—>Mg3N2

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Answer:

${ \sf{3Mg_{(s)} + N_{2(g)} →Mg _{3}N_{2(s)}}}$

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3 years ago

Is it possible to make new water

alexandr1967 [171]

No, Matter cannot be created nor deastroyed.

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3 years ago

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What is the energy required to go from a solid to a liquid called?

jek_recluse [69]

Answer:

C. The thermal energy of a substance.

Explanation:

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3 years ago

Consider these reactions:

Virty [35]

511.2 grams of chlorine gas consumed (with excess H-) when

1,342.0 kJ of energy is released from the system.

<h3></h3><h3>What is an exothermic reaction?</h3>

In thermochemistry, an exothermic reaction is a "reaction for which the overall standard enthalpy change ΔH⚬ is negative."

Given that 1 mole of chlorine releases -184.6 energy.

Then, we have to find the number of moles of chlorine when 1,342.0 kJ of energy is released from the system.

So, calculating number of moles of chlorine.

Moles = $\frac{-1,342.0 \;kJ}{-184.6\;kJ}$

Moles = 7.2 mole

Now, calculating number mass of chlorine.

$\rm Moles=\rm\frac{Mass}{Molar \;mass}$

Mass = 7.2 mole x 71 g/mole

Mass = 511.2 gram

Learn more about exothermic reaction here:

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2 years ago

A scientist observes that the electrical resistance of a superconducting material drops to zero when the material is cooled to v

k0ka [10]

Answer:

The scientist is observing an intensive property of a superconductor.

Explanation:

An intensive property is a bulk property of matter. This means that an intensive property does not depend on the amount of substance present in the material under study. Typical examples of intensive properties include; conductivity, resistivity, density, hardness, etc.

An extensive property is a property that depends on the amount of substance present in a sample. Extensive properties depend on the quantity of matter present in the sample under study. Examples of extensive properties include, mass and volume.

Resistance of a superconducting material has nothing to do with the amount of the material present hence it is an intensive property of the superconductor.

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3 years ago

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In a solution, the substance that changes phase is the _____, while the substance that does not change phase is the____.

In a solution, the substance that changes phase is the _, while the substance that does not change phase is the.