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Sidana [21]
2 years ago
6

A dark purple liquid is diluted by adding water.

Chemistry
1 answer:
alexandr402 [8]2 years ago
6 0

Answer: The process is diffusion.

Explanation:

a dark liquid will have the highest concentration of dark purple atoms/molecules so it gives a concentrated colour.

when water is added to it, the colourless water molecules fill up the gaps between the purple particles and so their colour fades and becomes lighter and lighter as we add more water. see the image attached where imagine the red particles are water and the blue particles are purple particles. thats why the colour fades.

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Answer:

C. Energy is absorbed and released during chemical reactions,

Explanation:

All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions release energy.

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3 years ago
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Burning 1 kg of coal releases about 3 million joules of energy. If you could use all of the chemical energy to lift another kilo
Katarina [22]

I could lift 3.06 x 10⁵ m high

<h3>Further explanation </h3>

Energy is the ability to do work. Energy can change from one energy to another

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3 years ago
Help me with 5-11 Reward - 15 points
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The enthalpy of a pure liquid at 75oC is 100 J/mol. The enthalpy of the pure vapor of that substance at 75oC is 1000 J/mol. What
pentagon [3]

Answer:

900 J/mol

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Data provided:

Enthalpy of the pure liquid at 75° C = 100 J/mol

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