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Sophie [7]
3 years ago
5

Salt and sugar are poured into a glass of water and stirred. Slowly, the salt and sugar crystals become harder to see and then c

annot be seen at all. What happened to the salt and sugar?
Group of answer choices

They dissolved into the water, forming a mixture.

They reacted with the water, forming a compound.

They combined with the water, forming an element.

They evaporated from the water, forming a solid.
Chemistry
1 answer:
evablogger [386]3 years ago
4 0

Answer:

They dissolved into the water, forming a mixture.

Explanation:

The salt is sodium chloride (NaCl) and the sugar is a dissacharide which contains many hydroxyl  groups (-OH). Both of them are very soluble in water, but they will not start a chemical reaction between themselves.

Dissolving them in water will form a <u>mixture</u> of chloride ions (Cl⁻), sodium ions (Na⁻) and sugar molecules.

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Kamila [148]
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6 0
4 years ago
About one-third of the toxic metal, mercury (Hg), is released into the air from natural sources, such as rocks, soil, volcanoes,
Stolb23 [73]

Answer:

Two-third of the toxic metal, mercury comes from gold mining.

Explanation:

During gold mining small pieces of gold which are within  the soil are separated with the help of mercury. Both gold and mercury are mixed and they forms amalgam. Further gold can be extracted by vaporizing the mercury, thus releasing it into air and contributing to two-third of the air pollution by human activities.

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7 0
3 years ago
7. Which is an example of a good insulator? <br>iron<br>copper <br>silver <br>rubber​
Dmitrij [34]

Answer:

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4 0
3 years ago
A photon of light has a wavelength of 0.050 cm. Calculate its energy.
Harman [31]

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5 0
3 years ago
How many moles are in a sample of 1.52 x 1024 atoms of mercury (Hg)?
OLEGan [10]

The answer is:

2.5 moles

The explanation:

when avogadro's number = 6.02 * 10^23

and when 1 mole of the sample will give → 6.02*10^23 atoms

So,        ??? mole of the sample will give→ 1.52 x 10^24 atoms

∴ number of moles = (1.52 X 10^24) * 1 mole / (6.02X10^23)

                                = 2.5 moles

8 0
3 years ago
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