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UkoKoshka [18]
2 years ago
11

Please help do not understand!!!!!!!!!!!!!!!

Chemistry
1 answer:
makvit [3.9K]2 years ago
7 0

Answer:

If your asking how much the reactions weigh separately than it should be 25

Explanation:

25 +25=50

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There rlly isn’t noooo number so what do you expect of course it would be zero. 0£
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Rank the speeds of sound through these materials, from greatest to least:a. Airb. Steelc. Water
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Ranking order of speed of sound is; Steel >Water > Air.

Speed of sound in normal air is 340 m/s, in water the speed is 1,430 m/s and in steel the speed is 5920 m/s.

<h3>What is speed of sound?</h3>

The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. The speed of sound in an ideal gas depends only on its temperature and composition. The speed of sound in mathematical notation is conventionally represented by 'c'. The speed of sound is variable and depends on the properties of the substance through which the wave is travelling.

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Which type of energy is associated with random motion of atoms and molecules in a sample of air?
aleksandrvk [35]

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3 years ago
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What is the specific heat of a substance if 1450 calories are required to raise the temperature of a 240g sample by 20℃?
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6960 J/kg°C

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2 years ago
what would you observe if you used a ballpoint pen instead of a pencil to mark the chromatography paper?
sveticcg [70]

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It basically messes up the results

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Graphite, or pencil lead however, is not an organic material and therefore will not be affected by common organic solvents used for thin-layer chromatography. Pen ink on the other hand will be readily absorbed by the solvent and will move up the plate.

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