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arlik [135]
3 years ago
13

How many atoms are in a molecule of hydrogen peroxide?

Chemistry
1 answer:
Alenkasestr [34]3 years ago
7 0
2 Hydrogen and 2 Oxygen
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True or false. Gas particles never touch each other.
Sati [7]

Answer:

False.  In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other.

Explanation:

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6 0
3 years ago
Which of the following is a chemical change?
FromTheMoon [43]

<u>Answer:</u>

<em>Silver tarnishing as the silver metal reacts with sulphur is a chemical change.</em>

<u>Explanation:</u>

Tarnishing is the process of chemical change occurring on the surface of objects leading to corrosion or other defects on the surface. The remaining options like dilution, eroding is a physical change where the concentration of salt and rock particles will be decreased, respectively.

Similarly for soil drying also the concentration of water will be decreased leading to a physical change from wetty or dry soil.

But the last option which indicates tarnishing of silver metal on reaction with sulphur is a chemical process as the surface of silver metal will be reacting to sulphur and leads to lose of electrons which leads to corrosion of the surface or tarnishing of silver.

4 0
3 years ago
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Alex built a model to show how light bends when placed into water. To do this, Alex filled a fish tank up with water, and shined
densk [106]

Answer:

The model cannot show how light bends.

Explanation:

4 0
3 years ago
The units used to measure heat are?
Akimi4 [234]

Answer&Explanation:

The unit used to measure Heat is joule equal to that of Energy and is abbreviated as (J)

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D)The sound quality for these waves cannot be compared.

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