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Lubov Fominskaja [6]
2 years ago
9

How is the kinetic energy of the particles that make up a substance different

Chemistry
1 answer:
erastova [34]2 years ago
8 0

Answer:

D. The kinetic energy is greater after a substance changes from a

solid to a liquid

Explanation:

During a phase change from solid to liquid, the particles making up the mobile becomes more mobile and as a result there is an increase in kinetic energy of the system.

  • Kinetic energy is the energy accrued due to the motion of a body.
  • In a melting process where solids turn to liquid, there is an increase in kinetic energy.
  • When randomness of a system increase, kinetic energy also increases.
  • From liquid to gas and gas to plasma increases kinetic energy.
  • In the other way round, the kinetic energy reduces.
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Select the correct answer from each drop-down menu. An atom has 9 electrons and 9 protons at the start. If it loses 2 electrons,
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If it loses to electrons the net charge will be +2. If the atom instead gains 4 electrons, the net charge will be -4.

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How many centimeters are in .479 kilometers
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Answer:

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<u>Chemistry</u>

  • Base 10 Decimal System
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Explanation:

<u>Step 1: Define</u>

0.479 km

<u>Step 2: Identify Conversions</u>

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<u />0.479 \ km(\frac{1000 \ m}{1 \ km} )(\frac{100 \ cm}{1 \ m} ) = 47900. cm

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules.</em>

47900. cm ≈ 47900 cm

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